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beruecksichtige naturwissenschaftliche Journale:
Spectroscopy Letters - published by
Taylor & Francis -
... provides vital coverage of fundamental developments, new or improved instrumentation, spectroscopic diagnostics, and applications of spectroscopy across all disciplines. Offering communications of original experimental and theoretical work, this journal reports and discusses such methods as NMR, ESR, microwave, NIR, Raman, and UV spectroscopy, together with atomic emission, absorption and fluorescence, X-ray spectroscopy, organic and inorganic mass spectrometry, and electron microscopy.
Applied Spectroscopy Reviews - published by
Taylor & Francis -
... provides the latest information on the principles, methods, and applications of all the diverse branches of spectroscopy, from X-ray, infrared, Raman, atomic absorption, and ESR to microwave, mass, NQR, NMR, and ICP. This international, single-source journal presents discussions that relate physical concepts to chemical applications for chemists, physicists, and other scientists using spectroscopic techniques.
Journal of Applied Spectroscopy - published by
Springer -
JAS is the English translation of an important publication reporting on key applications of spectroscopy in chemistry, physics, metallurgy, and biology. An increasing number of papers presented here focus on the theory of lasers, as well as on the tremendous potential for the practical applications of lasers in numerous fields and industries.
Aktuelle wissenschaftliche Fachartikel der
genannten Journale:
Comprehensive optical spectroscopic studies of the combustion process of solid-state pyrotechnic mixtures based on Mg and
Sr(NO3)2 have been carried out. Emission spectra of the mixtures in the ultraviolet, visible, and infrared wavelength regions have
been studied under various atmospheric conditions taking into account radiation transfer in air along an optical path of observation
up to 5 km long.
Content Type Journal Article
Pages 763-771
DOI 10.1007/s10812-012-9531-4
Authors
V. V. Azharonok, B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, 68 Nezavisimosti Ave., Minsk, 220072 Belarus
L. E. Kratsko, B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, 68 Nezavisimosti Ave., Minsk, 220072 Belarus
N. I. Chubryk, B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, 68 Nezavisimosti Ave., Minsk, 220072 Belarus
S. V. Goncharik, B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, 68 Nezavisimosti Ave., Minsk, 220072 Belarus
N. S. Miatselskaya, B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, 68 Nezavisimosti Ave., Minsk, 220072 Belarus
P. P. Yakshonak, Physical-Technical Institute, National Academy of Sciences of Belarus, Minsk, Belarus
V. I. Hamayunau, Physical-Technical Institute, National Academy of Sciences of Belarus, Minsk, Belarus
Charge-transfer complexes (CTC) resulting from interactions of 1,3-di[(E)-1-(2-hydroxyphenyl) methylideneamino]-2-propanol Schiff base with some acceptors such as iodine (I2), bromine (Br2), and picric acid (PiA) have been isolated in the solid state in a chloroform solvent at room temperature.
Based on elemental analysis, UV-Vis, infrared, and 1H NMR spectra, and thermogravimetric analysis (TG/DTG) of the solid CTC, [(Schiff)(I2)] (1), [(Schiff)(Br2)] complexes with a ratio of 1:1 and [(Schiff)(PiA)3] complexes with 1:3 have been prepared. In the picric acid complex, infrared and 1H NMR spectroscopic data indicate that the charge-transfer interaction is associated with a hydrogen bonding, whereas the
iodine and bromine complexes were interpreted in terms of the formation of dative ion pairs [Schiff+, I2∙−] and [Schiff+, Br2∙−], respectively. Kinetic parameters were obtained for each stage of thermal degradation of the CT complexes using Coats–Redfern
and Horowitz–Metzger methods. DC electrical properties as a function of temperature of these charge transfer complexes have
been studied.
Content Type Journal Article
Pages 772-781
DOI 10.1007/s10812-012-9532-3
Authors
Moamen S. Refat, Department of Chemistry, Faculty of Science, Port Said University, Port Said, Egypt
Mohamed M. Ibrahim, Department of Chemistry, Faculty of Science, Taif University, 888 Taif, Saudi Arabia
Mohamed A. A. Moussa, Department of Chemistry, Faculty of Science, Taif University, 888 Taif, Saudi Arabia
Ab initio calculations in a harmonic approximation of absorption band absolute intensities in infrared spectra were carried out for
3 hydrocarbons and 14 halogenated hydrocarbons. The calculated data were compared with experimental values of the absolute
absorption intensities. It is shown that a Hartree–Fock calculation method overestimates significantly (by an average of 66%)
the integrated absolute intensities of the fundamental bands in the region 575–4000 cm–1. The deviation is reduced to 32% in the case of the MP2 method of accounting for electron correlations. Most of the overestimation
occurs for bands corresponding to vibrations involving halogen atoms.
Content Type Journal Article
Pages 782-786
DOI 10.1007/s10812-012-9533-2
Authors
A. I. Pavlyuchko, Moscow State University of Civil Engineering, Moscow, Russia
E. V. Vasilyev, Moscow State University of Civil Engineering, Moscow, Russia
L. A. Gribov, V. I. Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, 19 Kosygin St., Moscow, 119991 Russia
The development of amplified luminescence fluxes in powerful InGaAs/AlGaAs laser diode arrays (lasing wavelength 940–960 nm)
has been studied experimentally and theoretically at pump levels above the threshold value. Flux density values for amplified
luminescence propagation along (1.88⋅109 W/m2) and across (1.21⋅109 W/m2) the laser diode array cavity axis have been evaluated for the threshold pump level at room temperature (293 K). The contribution
of the recombination rate induced by the amplified luminescence to the threshold current generation of the laser diode array
reaches 7%. It has been shown that the amplified luminescence flux density is increased by 49% as the pump level rises from
one to three threshold values.
Content Type Journal Article
Pages 811-816
DOI 10.1007/s10812-012-9537-y
Authors
M. V. Bogdanovich, B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, 68 Nezavisimosti Ave., Minsk, 22072 Belarus
V. V. Kabanov, B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, 68 Nezavisimosti Ave., Minsk, 22072 Belarus
Y. V. Lebiadok, B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, 68 Nezavisimosti Ave., Minsk, 22072 Belarus
A. A. Ramanenka, B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, 68 Nezavisimosti Ave., Minsk, 22072 Belarus
A. G. Ryabtsev, Belarusian State University, Minsk, Belarus
G. I. Ryabtsev, B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, 68 Nezavisimosti Ave., Minsk, 22072 Belarus
M. A. Shchemelev, Belarusian State University, Minsk, Belarus
S. K. Mehta, Solid State Physics Laboratory, Delhi, India
Dipole moments of (E,E)-2,5-bis[2-(4-N,N-dipropylaminophenyl)ethylenyl]-3,6-dimethylpyrazine (VS365) quadrupolar dye in 1,4-dioxane and cyclohexane in addition
to its instantaneous fluorescence spectra and fluorescence lifetimes in dichloromethane (pure and with added trifluoroacetic
acid) were measured. Quantumchemical calculations show that the π − π conjugated system is localized in the flattest part
of the molecule due to disorder in the ground-state geometry of the dye molecule and that this part is the one responsible
for light absorption. The effect of localized excitation of the dye causes a considerable change in its dipole moment Δaμ. Various fluorescent forms of the dye that feature considerably spaced emission spectra and different fluorescence lifetimes
originate by adding trifluoroacetic acid to the solution of oligophenylenevinylene in dichloromethane.
Content Type Journal Article
Pages 787-793
DOI 10.1007/s10812-012-9534-1
Authors
N. A. Nemkovich, B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, 68 Nezavisimosti Ave., Minsk, 220072 Belarus
H. Detert, Institute of Organic Chemistry, J. Gutenberg University of Mainz, Mainz, Germany
A. N. Sobchuk, B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, 68 Nezavisimosti Ave., Minsk, 220072 Belarus
Angular dependences of electromagnetic radiation scattered by separate finite dielectric cylinders and their ordered assemblies
have been numerically simulated using a volume integral equation formalism. Dependences of directional diagrams on optical-geometric
parameters of both the separate finite cylinders and their spatial ordering were studied. It is shown that collective effects
of a coherent nature in the assembly of spatially ordered cylinders result in a scattered radiation angular distribution that
differs strongly from that obtained for a system of cylinders that are not electrodynamically coupled.
Content Type Journal Article
Pages 817-822
DOI 10.1007/s10812-012-9538-x
Authors
R. A. Dynich, B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, 68 Nezavisimosti Ave., Minsk, 22072 Belarus
V. A. Kovtun-Kuzhel, Grodno State University, Belarus Minsk
A. N. Ponyavina, B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, 68 Nezavisimosti Ave., Minsk, 22072 Belarus
Features of light pulse propagation and nonlinear optical transformation of the spectrum generated by titanium-sapphire laser
pulses (τ0.5 = 27 fs, λ0 = 790 nm) have been studied experimentally in a 50-cm cylindrical hollow waveguide (microcapillary with 280-μm diameter core)
filled with gaseous molecular nitrogen and helium. Stable guided propagation of light pulses with an intensity of ~1.5⋅1014 W/cm2 in the fundamental EH11 mode of the gas-filled capillary has been demonstrated. Exact focusing of the laser light made it possible to obtain rather
high relative (≥95%) and absolute (~60%) energy transmission efficiencies for the pulses at gas pressures equal to or lower
than 760 Torr. A method to determine the nonlinear phase shift of the pulses has been proposed. Values of the nonlinear refractive
index n2 ≈ 4.5⋅10–23 cm2/(W⋅Torr) (N2) and n2 ≈ 2.8⋅10–23 cm2/(W⋅Torr) (He) have been found. A short-wavelength shift in addition to the Kerr nonlinearity has been shown to be contributed
by the generated electron plasma at high pulse intensities (≥1014 W/cm2).
Content Type Journal Article
Pages 802-810
DOI 10.1007/s10812-012-9536-z
Authors
K. G. Shaynurova, Akadempribor Scientific-Production Association, Academy of Sciences of the Republic of Uzbekisan, Tashkent, Uzbekistan
S. A. Bakhramov, Akadempribor Scientific-Production Association, Academy of Sciences of the Republic of Uzbekisan, Tashkent, Uzbekistan
A. M. Kokhkharov, Heat Physics Department, Academy of Sciences of the Republic of Uzbekistan, 28 Katartal St., Tashkent, 100135 Uzbekistan
U. K. Makhmanov, Akadempribor Scientific-Production Association, Academy of Sciences of the Republic of Uzbekisan, Tashkent, Uzbekistan
E. A. Zakhidov, Heat Physics Department, Academy of Sciences of the Republic of Uzbekistan, 28 Katartal St., Tashkent, 100135 Uzbekistan
FTIR spectra of pharmacologically active molecules of benzoic acid and its derivatives have been measured in CCl4 solutions and in microcrystals. Features of the formation of intra-and intermolecular hydrogen bonds have been analyzed.
Spectral attributes have been revealed that characterize the participation of a carboxyl group in different types of intermolecular
interactions with the formation of cyclic, linear, and criss-cross dimers. Mechanisms of the intermolecular interactions are
shown to be defined by the character of the substituents attached to the benzene ring in the para- and meta-positions relative
to the carboxylic group.
Content Type Journal Article
Pages 794-801
DOI 10.1007/s10812-012-9535-0
Authors
M. V. Belkov, B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, 68 Nezavisimosti Ave., Minsk, 220072 Belarus
S. D. Brinkevich, Belarusian State University, Minsk, Belarus
S. N. Samovich, Belarusian State University, Minsk, Belarus
I. V. Skornyakov, B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, 68 Nezavisimosti Ave., Minsk, 220072 Belarus
G. B. Tolstorozhev, B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, 68 Nezavisimosti Ave., Minsk, 220072 Belarus
O. I. Shadyro, Belarusian State University, Minsk, Belarus
We have observed a significant increase in the intensity with anti-Stokes excitation of recombination luminescence in AgCl(I)
microcrystals sensitized by methylene blue molecules in the presence of silver nanoparticles.
Content Type Journal Article
Pages 909-912
DOI 10.1007/s10812-012-9552-z
Authors
Nguyen Thi Kim Chung, Voronezh State University, 1 Universitetskaya pl., Voronezh, 394006 Russia
E. A. Egorushina, Voronezh State University, 1 Universitetskaya pl., Voronezh, 394006 Russia
A. N. Latyshev, Voronezh State University, 1 Universitetskaya pl., Voronezh, 394006 Russia
O. V. Ovchinnikov, Voronezh State University, 1 Universitetskaya pl., Voronezh, 394006 Russia
M. S. Smirnov, Voronezh State University, 1 Universitetskaya pl., Voronezh, 394006 Russia
T. I. Suvorova, Voronezh State University, 1 Universitetskaya pl., Voronezh, 394006 Russia
Two simple, sensitive, and cost-effective spectrophotometric methods are described for the determination of metoclopramide
hydrochloride (MCP) in pharmaceutical dosage forms. The methods are based on a redox reaction between MCP and KMnO4 in alkaline and acid media. Direct spectrophotometry (method A) involves treating MCP with permanganate in an NaOH medium
and measuring a bluish green product at 610 nm. In indirect spectrophotometry (method B), MCP is treated with a fixed concentration
of KMnO4 in an H2SO4 medium, and after a specified time, the unreacted KMnO4 is measured at 545 nm. Under optimum assay conditions, Beer’s law
is obeyed over the ranges of 0.75–12.0 and 2.5–30.0 g/ml for methods A and B, respectively. Molar absorptivity values are
calculated to be 2.33∙104 and 2.66∙104 l/mol cm for methods A and B, respectively, and corresponding Sandell’s sensitivity values are 0.015 and 0.013 g/cm2. Limits of detection (LOD) and quantification (LOQ) are also reported. The applicability of the developed methods was demonstrated
by the determination of MCP in tablet and injection forms. The accuracy and reliability of the proposed methods were further
ascertained by recovery studies via standard addition technique.
Content Type Journal Article
Pages 873-883
DOI 10.1007/s10812-012-9547-9
Authors
O. Zenita Devi, Department of Chemistry, Manasagangothri, University of Mysore, Mysore-570 006 Karnataka, India
K. Basavaiah, Department of Chemistry, Manasagangothri, University of Mysore, Mysore-570 006 Karnataka, India
K. B. Vinay, Department of Chemistry, Manasagangothri, University of Mysore, Mysore-570 006 Karnataka, India
We have studied refractive index dispersion in thin ZnGa2O4 films obtained by high-frequency RF ion plasma sputtering. We have established that the spectral dependence of the refractive
index in the visible region of the spectrum is mainly determined by transitions from the band including 2p states of the oxygen
and 3d states of the zinc, forming the highest occupied level of the valance band, to the bottom of the conduction band formed
by the 4s4p states of the zinc. For the studied films, we have determined the parameters of the single-oscillator approximation,
the dispersion energy, the chemical bond ionicity, and the coordination number.
Content Type Journal Article
Pages 922-926
DOI 10.1007/s10812-012-9555-9
Authors
O. M. Bordun, Ivan Franko Lviv National University, 50 Dragomanova Str., Lviv, 79005 Ukraine
I. Yo. Kukharskyy, Ivan Franko Lviv National University, 50 Dragomanova Str., Lviv, 79005 Ukraine
V. G. Bihday, Ivan Franko Lviv National University, 50 Dragomanova Str., Lviv, 79005 Ukraine
The spectral characteristics of the emission in the 140-315 nm range from pulsed-periodic capacitive discharges in mixtures
of water vapor and helium and argon are described. In the VUV the most intense bands have maxima at λ = 156.0, 180.3, and
186.0 nm, and in the region of 300–315 nm, at λ = 312.1 and 313.4 nm. The brightness of the emission from the capacitive discharge
plasma is optimized with respect to the partial pressures of helium, argon, and water vapor. The electron kinetic coefficients
of discharges in argon and water vapor mixtures are calculated for E/N = 1–1000 Td.
Content Type Journal Article
Pages 867-872
DOI 10.1007/s10812-012-9546-x
Authors
A. K. Shuaibov, Uzhgorod National University, 46 Pidhirna Str., Uzhgorod, 88000 Ukraine
A. I. Minya, Uzhgorod National University, 46 Pidhirna Str., Uzhgorod, 88000 Ukraine
A. N. Malinin, Uzhgorod National University, 46 Pidhirna Str., Uzhgorod, 88000 Ukraine
Z. T. Homoki, Uzhgorod National University, 46 Pidhirna Str., Uzhgorod, 88000 Ukraine
R. V. Hrytsak, Uzhgorod National University, 46 Pidhirna Str., Uzhgorod, 88000 Ukraine
We present a simulation model for a stream of photon counts that can be detected in fluorescence fluctuation spectroscopy
systems from diffusing molecules undergoing spontaneous transitions between radiative and nonradiative states. Using our model,
we can obtain various characteristics of a random stream of photon counts which allows us to test fluorescence fluctuation
spectroscopy methods and to predict the results of full-scale experiments.
Content Type Journal Article
Pages 892-898
DOI 10.1007/s10812-012-9549-7
Authors
I. P. Shingaryov, Belorussian State University, 4 Nezavisimost Ave., Minsk, 220030 Belarus
V. V. Skakun, Belorussian State University, 4 Nezavisimost Ave., Minsk, 220030 Belarus
V. V. Apanasovich, Belorussian State University, 4 Nezavisimost Ave., Minsk, 220030 Belarus
Magnetic reversal of a ferromagnetic single-domain nanoparticle in the form of a disk contained in a multilayer nanostructure
irradiated by linearly and circularly polarized picosecond laser pulses is modeled. It is shown that heating of the disk by
the laser light causes a change in its direction of magnetization. This is accompanied by oscillations in the magnetization
that decay over 1–16 ns. The frequencies of these oscillations lie in the range of 0.5–26 GHz. The main reason for the magnetic
reversal of the disk is a change in the magnetic anisotropy energy during heating. The laser pulses also create a spin-polarized
current and an inverse Faraday magneto-optical field in the structure, which influence the duration, amplitude, and frequency
of the magnetization oscillations.
Content Type Journal Article
Pages 848-854
DOI 10.1007/s10812-012-9543-0
Authors
A. V. Kukharev, Belarusian State University of Information Technology and Electronics, ul. P. Brovki 6, 220013 Minsk, Belarus
A. L. Danilyuk, Belarusian State University of Information Technology and Electronics, ul. P. Brovki 6, 220013 Minsk, Belarus
V. E. Borisenko, Belarusian State University of Information Technology and Electronics, ul. P. Brovki 6, 220013 Minsk, Belarus
The dependence of photoinduced processes in cadmium selenide nanocrystals in an external electric field on the energy of the
exciting photons is established. A relationship between the photoinduced buildup of photoluminescence and its quenching in
an external electric field in quantum sized cadmium selenide nanocrystals is demonstrated. The mechanisms for the quenching
of the photoluminescence and for the influence of the exciting photon energy on the photoinduced processes are discussed.
Content Type Journal Article
Pages 834-841
DOI 10.1007/s10812-012-9541-2
Authors
L. I. Gurinovich, B. I. Stepanov Institute of Physics, National Academy of Belarus, 68 Nezavisimosti Ave., Minsk, 220072 Belarus
M. V. Artemyev, Institute of Physical-chemical Problems, Belarusian State University, Minsk, Belarus
A. P. Stupak, B. I. Stepanov Institute of Physics, National Academy of Belarus, 68 Nezavisimosti Ave., Minsk, 220072 Belarus
S. Ya. Prislopskii, B. I. Stepanov Institute of Physics, National Academy of Belarus, 68 Nezavisimosti Ave., Minsk, 220072 Belarus
S. V. Gaponenko, B. I. Stepanov Institute of Physics, National Academy of Belarus, 68 Nezavisimosti Ave., Minsk, 220072 Belarus
The spectral and temporal characteristics of plasmas produced by femtosecond laser pulses acting on seawater surfaces are
studied. The time dependence of the decay in the intensities of emission lines and the continuum are determined and the electron
density is estimated using the three-body recombination time. It is shown that an atomic line with a low excitation potential
is the most sensitive for femtosecond laser induced breakdown spectroscopy.
Content Type Journal Article
Pages 861-866
DOI 10.1007/s10812-012-9545-y
Authors
A. A. Ilyin, V. I. Il’ichev Pacific Oceanological Institute, Far Eastern Branch of the Russian Academy of Sciences, 43 Baltiiskaya Str., Vladivostok, 690041 Russia
E. B. Sokolova, Institute of Automation and Control Processes, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok, Russia
S. S. Golik, Institute of Automation and Control Processes, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok, Russia
O. A. Bukin, Institute of Automation and Control Processes, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok, Russia
K. A. Shmirko, Institute of Automation and Control Processes, Far Eastern Branch of the Russian Academy of Sciences, Vladivostok, Russia
Optical absorption spectra in thin [N(CH3)4]2CuCl4 crystals in the thickness range 10 μm ≤ d < 100 μm have been studied. Strengthening of the crystal field has been found with
a decrease in the [N(CH3)4]2CuCl4 crystal size. The reasons for absorption band shifts in the visible region depending on the [N(CH3)4]2CuCl4 crystal thickness and the manifestation of a size effect in crystals with an incommensurate superstructure are discussed.
Content Type Journal Article
Pages 823-828
DOI 10.1007/s10812-012-9539-9
Authors
R. M. Shymkiv, Ivan Franko Lviv National University, 107 Tarnavskii St., Lviv, 79017 Ukraine
S. A. Sveleba, Ivan Franko Lviv National University, 107 Tarnavskii St., Lviv, 79017 Ukraine
I. V. Karpa, Ivan Franko Lviv National University, 107 Tarnavskii St., Lviv, 79017 Ukraine
I. N. Katerynchuk, Ivan Franko Lviv National University, 107 Tarnavskii St., Lviv, 79017 Ukraine
I. M. Kunyo, Ivan Franko Lviv National University, 107 Tarnavskii St., Lviv, 79017 Ukraine
E. I. Phitsych, Ivan Franko Lviv National University, 107 Tarnavskii St., Lviv, 79017 Ukraine
This is an IR spectroscopic study of the interaction of CO with In2O3 and the nanocomposite In2O3-Au. A mechanism for low-temperature detection of CO on nanocomposite In2O3-Au can be determined from these data. This process includes catalytic oxidation of CO through formation of intermediate complexes
involving hydroxyl groups of In2O3.
Content Type Journal Article
Pages 842-847
DOI 10.1007/s10812-012-9542-1
Authors
M. I. Ivanovskaya, Scientific-research Institute of Physical-Chemical Problems, Belarusian State University, 14 Leningradskaya Str., Minsk, 220030 Belarus
E. A. Ovodok, Belarusian State University, Minsk, Belarus
D. A. Kotsikau, Belarusian State University, Minsk, Belarus
We have studied the spectral luminescence characteristics of aqueous solutions of humic products obtained from different raw
material sources, and their behavior as the excitation wavelength increases from 270 nm to 355 nm. We have identified differences
in the spectral properties of industrial humic products from coalified materials, lignin-containing organic waste, and humic
products from plant raw material (peat, sapropel, vermicompost). We have shown that humic products from plant raw material
have spectral properties closer to those for humic substances in natural water or soil than humic products from coalified
materials.
Content Type Journal Article
Pages 884-891
DOI 10.1007/s10812-012-9548-8
Authors
O. Yu. Gosteva, M. V. Lomonosov Moscow State University, Leninskie gory, Moscow, 119991 Russia
A. A. Izosimov, M. V. Lomonosov Moscow State University, Leninskie gory, Moscow, 119991 Russia
S. V. Patsaeva, M. V. Lomonosov Moscow State University, Leninskie gory, Moscow, 119991 Russia
V. I. Yuzhakov, M. V. Lomonosov Moscow State University, Leninskie gory, Moscow, 119991 Russia
O. S. Yakimenko, M. V. Lomonosov Moscow State University, Leninskie gory, Moscow, 119991 Russia
A ferromagnetic Heusler Cu2MnAl alloy with a shape memory effect has been studied in the wide spectral region of 0.25–2.80 μm (0.44–5.35 eV) at room
temperature using spectral ellipsometry methods. Dispersion dependences for optical constants n(hν) and κ(hν), dielectric
permeability ε(hν), and optical conductivity σ(hν), which is proportional to the interband density of electronic states, have
been analyzed. Optical conductivity spectra have been calculated by mathematical modeling based on data for the electronic
state densities in both subbands of electrons with spins oriented along and against the magnetization direction. A model of
indirect transitions based on the Berglund–Spicer formula has been shown to describe the experimental spectrum only in general
terms. The main contribution to the conductivity in the high-frequency spectral region is due to direct transitions of electrons
in the vicinities of L, X, and Γ points of the Brillouin zone coupled with Cu atoms whereas low-energy anomalies in the absorption
spectrum σ(hν) are caused by electrons coupled with Mn and Al atoms.
Content Type Journal Article
Pages 829-833
DOI 10.1007/s10812-012-9540-3
Authors
V. S. Stashchuk, Taras Shevchenko Kyiv National University, 64 Volodymyrska St., Kyiv, 01601 Ukraine
V. M. Bondar, Taras Shevchenko Kyiv National University, 64 Volodymyrska St., Kyiv, 01601 Ukraine
O. P. Polianska, Taras Shevchenko Kyiv National University, 64 Volodymyrska St., Kyiv, 01601 Ukraine
Y. V. Filipov, Taras Shevchenko Kyiv National University, 64 Volodymyrska St., Kyiv, 01601 Ukraine
We use IR spectroscopy to study the crystallinity of polyvinyl alcohol films cast from aqueous solutions containing inorganic
salts. We have established that adding salt leads to an increase in the degree of crystallinity of the polymer. The crystallizing
effect of the studied salts increases in the series Na2CO3 = Na2SO4 < NH4Cl < CsCl = NaCl < KCl.
Content Type Journal Article
Category Brief Communications
Pages 904-908
DOI 10.1007/s10812-012-9551-0
Authors
O. N. Tretinnikov, B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, 68 prosp. Nezavisimosti, Minsk, 220072 Belarus
S. A. Zagorskaya, B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, 68 prosp. Nezavisimosti, Minsk, 220072 Belarus
We used the single-beam Z-scan method, employing picosecond laser pulses with λ = 1064 nm, to measure the nonlinear refractive
index and nonlinear absorption in vanadate crystals, which are promising for design of laser sources. We have established
that there is practically no nonlinear absorption in these crystals in the near IR range and that doping them with neodymium
ions leads to a significant reduction in the nonlinear refraction. This effect can be used to partially compensate for the
negative impact of nonlinear refraction on the lasing characteristics of lasers.
Content Type Journal Article
Pages 918-921
DOI 10.1007/s10812-012-9554-x
Authors
A. I. Vodchits, B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, 68 prosp. Nezavisimosti, Minsk, 220072 Belarus
V. A. Orlovich, B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, 68 prosp. Nezavisimosti, Minsk, 220072 Belarus
P. A. Apanasevich, B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, 68 prosp. Nezavisimosti, Minsk, 220072 Belarus
We propose a procedure for determining the contribution from the concentrations of triplet molecules and their interaction
constants to the intensity of delayed annihilation fluorescence of isolated molecular pairs. We have used the proposed procedure
to determine the contribution of these quantities to the intensity of the components in the doublet in the quasi-line delayed
fluorescence spectrum of coronene in n-octane at 77 K.
Content Type Journal Article
Pages 913-917
DOI 10.1007/s10812-012-9553-y
Authors
N. V. Zhdanova, North Caucasus State Technical University, 2 prosp. Kulakova, Stavropol, 355029 Russia
I. A. Dobrovolskaya, North Caucasus State Technical University, 2 prosp. Kulakova, Stavropol, 355029 Russia
M. I. Deryabin, North Caucasus State Technical University, 2 prosp. Kulakova, Stavropol, 355029 Russia
Pulsed laser deposition of Bi2Sr2Ca1–xYxCu2O8+δ (Bi-22Y2) with x = 0, 0.30, and 0.49 on an MgO (100) substrate was conducted using a Q-switched 1064 nm Nd:YAG laser The laser-produced plasma
(LPP) emission was collected during the deposition. Time-resolved optical emission spectroscopy reveals that the plasma plume
consists of neutral atoms and ions. SEM images indicate that clusters of correct stoichiometry arrive on the substrate surface.
Our result confirms that IR PLD transfers material stoichiometrically.
Content Type Journal Article
Pages 855-860
DOI 10.1007/s10812-012-9544-z
Authors
J. D. R. Vitug, National Institute of Physics, University of the Philippines-Diliman, Quezon City, Philippines 1101
J. C. De Vero, National Institute of Physics, University of the Philippines-Diliman, Quezon City, Philippines 1101
G. R. S. Blanca, National Institute of Physics, University of the Philippines-Diliman, Quezon City, Philippines 1101
R. V. Sarmago, National Institute of Physics, University of the Philippines-Diliman, Quezon City, Philippines 1101
W. O. Garcia, National Institute of Physics, University of the Philippines-Diliman, Quezon City, Philippines 1101
We have developed laser spectral analysis (LSA) methods for quality control of starch products in the raw material stage and
after thermomechanical processing (extrusion). We show that it is possible to plot a common calibration curve for analyte
elements in different types of analyte samples, i.e., we have established that there is no matrix effect on the analysis results.
Content Type Journal Article
Pages 899-903
DOI 10.1007/s10812-012-9550-1
Authors
V. S. Burakov, B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, 68 Nezavisimosti Ave., Minsk, 220072 Belarus
N. V. Tarasenko, B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, 68 Nezavisimosti Ave., Minsk, 220072 Belarus
V. I. Zhuravlova, B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, 68 Nezavisimosti Ave., Minsk, 220072 Belarus
V. V. Kiris, B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, 68 Nezavisimosti Ave., Minsk, 220072 Belarus
V. V. Litvjak, Research and Applied Center for Foodstuffs of the National Academy of Sciences of Belarus, Minsk, Belarus
A. B. Stepanenko, Belorussian National Technical University, Minsk, Belarus
Erratum to: To the article “Quantum Mechanical Interpretation of the IR Spectrum of 2-Deoxy-D-ribose in the OH Group Stretching Vibration Region” by T. Yu. Nikolaenko, L. A. Bulavin, and D. N. Govorun, Vol. 78, No. 5, pp. 751–754, November, 2011.
Content Type Journal Article
Category Erratum
Pages 927-927
DOI 10.1007/s10812-012-9556-8
Authors
T. Yu. Nikolaienko, Taras Shevchenko Kiev National University, 4 prop. Glushkova, Kiev, 03022 Ukraine
L. A. Bulavin, Taras Shevchenko Kiev National University, 4 prop. Glushkova, Kiev, 03022 Ukraine
D. N. Hovorun, Taras Shevchenko Kiev National University, 4 prop. Glushkova, Kiev, 03022 Ukraine
Changes in the chemical composition of lichens exposed to pollutants are investigated by means of FTIR spectroscopy. According
to model experiments, alkyl nitrates, ammonium salts, amines, and sulfones develop in the lichen thallus through the action
of ammonia and nitric and sulfuric acids. Spectroscopic data of modeling experiments enabled nitrogen- and sulfur-containing
substances to be identified as the main air pollutants in the vicinity of a pig-breeding complex and information to be obtained
on the content of the pollutants and their impact on the lichens.
Content Type Journal Article
Pages 711-718
DOI 10.1007/s10812-011-9522-x
Authors
A. F. Meysurova, Tver State University, 33 Zhelyabov St., Tver, 170100 Russia
S. D. Khizhnyak, Tver State University, 33 Zhelyabov St., Tver, 170100 Russia
P. M. Pakhomov, Tver State University, 33 Zhelyabov St., Tver, 170100 Russia
Spectroscopic studies of the surface of a porous solid containing micro amounts of uranyl nitrate hexahydrate using irradiation
by two sequential pulses with pulse-to-pulse intervals in the range 4–12 μs have shown that laser chemical synthesis of uranium
and uranium oxide nanoclusters within the interior of a porous solid is a promising technique, with the possibility at the
same time of determining the uranium content with good sensitivity (~10–10 g).
Content Type Journal Article
Pages 719-724
DOI 10.1007/s10812-011-9523-9
Authors
A. P. Zazhogin, Belorussian State University, 4 prosp. Nezavisimosti, Minsk, 220030 Belarus
D. S. Umreiko, Belorussian State University, 4 prosp. Nezavisimosti, Minsk, 220030 Belarus
M. P. Patapovich, Belorussian State University, 4 prosp. Nezavisimosti, Minsk, 220030 Belarus
A. R. Fadaiyan, Belorussian State University, 4 prosp. Nezavisimosti, Minsk, 220030 Belarus
A. I. Komyak, Belorussian State University, 4 prosp. Nezavisimosti, Minsk, 220030 Belarus
S. D. Umreiko, Belorussian State University, 4 prosp. Nezavisimosti, Minsk, 220030 Belarus
The spectral dependence of Stern–Volmer constants () for fluorescence quenching by Cu2+ ions in a standard sample of humic acid (HA) (IHSS) with monochromatic excitation (λex = 337.1 nm) conditions has been studied in the spectral range 400–600 nm. This is interpreted within a concept implying that
HA macromolecules possess the property of polydispersity, which means that fluorophore-containing sites are different in terms
of chemical nature and spatial accessibility. Modeling data show that the minimum number of spectral components required for
the simulated spectral dependence of to agree as closely as possible with that observed experimentally is three.
Content Type Journal Article
Pages 705-710
DOI 10.1007/s10812-011-9521-y
Authors
N. L. Lavrik, Institute of Chemical Kinetics and Combustion, Siberian Branch of Russian Academy of Sciences, 3 Institutskaya St., Novosibirsk, 630090 Russia
N. U. Mulloev, Institute of Chemical Kinetics and Combustion, Siberian Branch of Russian Academy of Sciences, 3 Institutskaya St., Novosibirsk, 630090 Russia
We have used the Bridgman method to grow single crystals of the ternary compound FeIn2Se4 and we have determined their composition and structure. We measured the transmission spectra in the intrinsic absorption
edge region in the temperature range 20–300 K. From the transmission spectra, we determined the bandgap width and plotted
its temperature dependence. We show that the Eg(T) dependence has a shape typical for semiconductor compounds.
Content Type Journal Article
Pages 755-758
DOI 10.1007/s10812-011-9529-3
Authors
I. V. Bodnar’, Belorussian State University of Information Science and Radioelectronics, 6 ul. P. Brovki, Minsk, 220013 Belarus
S. A. Pavlyukovets, Belorussian State University of Information Science and Radioelectronics, 6 ul. P. Brovki, Minsk, 220013 Belarus
A. V. Danilchik, B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, Minsk, Belarus
E. V. Lutsenko, B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, Minsk, Belarus
Processes in the gas phase of a glow discharge during diode and magnetron reactive sputtering of vanadium in an Ar–O2 atmosphere have been investigated by laser-induced fluorescence (LIF) as a function of the parameters of the glow discharge
and the composition of the atmosphere. The intensity of the fluorescence spectra increased by 1.5–2.0 orders of magnitude
in the magnetron sputtering process compared with that of diode sputtering. Under continuous sputtering conditions, the dependences
of the intensities and relative compositions of the fluorescence spectra on the discharge parameters (discharge voltage and
current) have been investigated. In pulsed mode of the glow discharge, the dynamics of changes in the spectra have been studied
versus variations in the discharge duration and the lag time for recording the fluorescence signal. The dependence of the
spectral line intensities on the partial pressure of oxygen has been found for vanadium and its oxide. The cathode surface
at pressures of 0.03–0.04 Pa was shown to convert to the oxidized state.
Content Type Journal Article
Pages 698-704
DOI 10.1007/s10812-011-9520-z
Authors
V. A. Khvostikov, Institute of Microelectronics Technology and High Purity Materials, Russian Academy of Sciences, 6 Institutskaya St., Chernogolovka, Moscow Dist. 142432, Russia
S. S. Grazhulene, Institute of Microelectronics Technology and High Purity Materials, Russian Academy of Sciences, 6 Institutskaya St., Chernogolovka, Moscow Dist. 142432, Russia
Zh. P. Burmii, Institute of Microelectronics Technology and High Purity Materials, Russian Academy of Sciences, 6 Institutskaya St., Chernogolovka, Moscow Dist. 142432, Russia
V. A. Marchenko, Institute of Microelectronics Technology and High Purity Materials, Russian Academy of Sciences, 6 Institutskaya St., Chernogolovka, Moscow Dist. 142432, Russia
We have experimentally studied the absorption spectra of hydrocarbon mixtures based on n-heptane and isooctane with small
(1%–2%) additions of aromatic hydrocarbons (benzene, toluene, xylene). The study was conducted in the region of the first
overtones of the vibrational spectra for the hydrocarbon groups CH3, CH2, CH. We show that four-component modeling of the absorption spectrum of the hydrocarbon mixture and minimization of the deviation
of the model spectrum from the experimental spectrum allow us to separately determine the content of the aromatic additives
for concentrations from 1%.
Content Type Journal Article
Pages 759-762
DOI 10.1007/s10812-011-9530-x
Authors
V. L. Vesnin, Ulyanovsk Branch, V. A. Kotel’nikov Institute of Radioengineering and Electronics, Russian Academy of Sciences, 48/2 ul. Goncharova, Ulyanovsk, 432063 Russia
V. G. Muradov, Ulyanovsk Branch, V. A. Kotel’nikov Institute of Radioengineering and Electronics, Russian Academy of Sciences, 48/2 ul. Goncharova, Ulyanovsk, 432063 Russia
Within MP2/6-311++G(d,p)//DFT B3LYP/6-31 G(d,p) theory, taking into account the anharmonicity of the vibrations, we have calculated
the vibrational spectra of all the conformers of the furanose, pyranose, and linear forms of the 2-deoxy-D-ribose molecule.
Based on the calculation, we have interpreted the experimental IR spectrum of this molecule in the region of stretching vibrations
of the OH groups. For the α and β anomers of the pyranose form of the molecule, we observe and explain the difference between
the populations realized in the experiment and the calculated thermodynamic equilibrium values. We present the structures
of the eight isomers of 2-deoxy-D-ribose determining its IR spectrum in a low-temperature inert matrix.
Content Type Journal Article
Pages 751-754
DOI 10.1007/s10812-011-9528-4
Authors
T. Yu. Nikolaenko, Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine, Kiev, Ukraine
L. A. Bulavin, Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine, Kiev, Ukraine
D. N. Govoruna, Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine, Kiev, Ukraine
The extended intersecting beam/optical spectroscopy method is used to study excitation of 5S, 5P, and 5D levels of the iron atom by slow electrons. Eighty-five excitation cross sections have been measured for an energy of the
exciting electrons equal to 50 eV. Ten optical excitation functions were recorded in the electron energy range 0–200 eV.
Content Type Journal Article
Category BRIEF COMMUNICATIONS
Pages 746-750
DOI 10.1007/s10812-011-9527-5
Authors
Yu. M. Smirnov, Moscow Power Engineering Institute, 14 ul. Krasnokazarmennaya, Moscow, 111250 Russia
We propose a method for fast retrieval of the inhalable particle concentration (PM2.5 and PM10) in a vertical atmospheric column from satellite measurements of the aerosol optical depth (AOD) without using a priori assumptions
concerning the refractive index and the aerosol particle size distribution function. The method is based on a polynomial regression
between PM2.5, PM10, and AOD at the wavelengths 466 nm and 644 nm, established from AERONET data. We have studied the sensitivity of the method
to errors in the optical measurements and have estimated the errors in retrieval of PM2.5 and PM10 for different atmospheric situations. We carry out parametrization of the regressions on the value of the integrated air
moisture content.
Content Type Journal Article
Pages 738-745
DOI 10.1007/s10812-011-9526-6
Authors
S. A. Lysenko, Belorussian State University, 4 prosp. Nezavisimosti, Minsk, 220030 Belarus
M. M. Kugeiko, Belorussian State University, 4 prosp. Nezavisimosti, Minsk, 220030 Belarus
We have developed a method for quantitative luminescent analysis of multicomponent media. To carry out this method, we need
to use a standard luminescent probe and have overlap between the luminescence excitation spectra of the probe and the analyte
substance. We have shown that the method is applicable for analysis of scattering media with different absorption optical
densities, including optically dense media. We have demonstrated that it is invariant relative to changes in the experimental
geometry and the parameters of the medium. A broad range of measurable values is characteristic of the method. Its sensitivity
is determined by the sensitivity of the luminescence intensity measurements. We have determined concentrations of organic
substances in the range ~10–10 to 10–11 g/cm3.
Content Type Journal Article
Pages 725-732
DOI 10.1007/s10812-011-9524-8
Authors
A. P. Voitovich, B. I. Stepanov Institute of Physics, National Academy of Belarus, 68 prosp. Nezavisimosti, Minsk, 220072 Belarus
V. S. Kalinov, B. I. Stepanov Institute of Physics, National Academy of Belarus, 68 prosp. Nezavisimosti, Minsk, 220072 Belarus
E. F. Martynovich, Irkutsk filial Branch, Institute of Laser Physics, Siberian Branch, Russian Academy of Sciences, Irkutsk, Russia
A. N. Novikov, B. I. Stepanov Institute of Physics, National Academy of Belarus, 68 prosp. Nezavisimosti, Minsk, 220072 Belarus
A. P. Stupak, B. I. Stepanov Institute of Physics, National Academy of Belarus, 68 prosp. Nezavisimosti, Minsk, 220072 Belarus
Two-factor dependences of the maximum and half-width of a surface plasmon resonance band on both the average diameter of nanoparticles
and the scatter in their particle-size distributions were defined for colloidal silver and gold aqueous solutions based on
modeling the extinction effectiveness factor by Mie theory. The obtained three-dimensional surfaces determined the shape of
calibration curves used to define the average particle diameters and the scatter in their particle-size distributions from
measurements of the maximum and half-width of the surface plasmon resonance band in spectra of the silver and gold colloidal
solutions. The calibration curves were correlated with experimental samples of aqueous ultradispersed media containing silver
and gold nanoparticles.
Content Type Journal Article
Pages 692-697
DOI 10.1007/s10812-011-9519-5
Authors
K. V. Kozadaev, Institute of Applied Physics Problems of Belarusian State University, 7 Kurchatov St., Minsk, 220108 Belarus
Differential transient absorption spectra have been studied for planar densely packed Ag/Na3AlF6 nanostructures under ultrashort laser pulse excitation. The nanostructures were fabricated by sequential thermal evaporation
of cryolite (Na3AlF6) and silver in vacuo onto glass and quartz substrates. A nonmonotonic variation in relaxation times of induced changes in
a surface plasmon resonance band was observed with an increase in the metal surface density that resulted in nanoparticle
size growth and structural modification of the densely packed layer. The tendency of the relaxation times to vary nonmonotonically
is explained by both features of intrinsic size effects and electron-tunneling processes in plasmonic densely packed nanostructures
of various topologies.
Content Type Journal Article
Pages 686-691
DOI 10.1007/s10812-011-9518-6
Authors
O. V. Buganov, B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, 68 Nezavisimosti Ave., Minsk, 220072 Belarus
A. D. Zamkovets, B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, 68 Nezavisimosti Ave., Minsk, 220072 Belarus
A. N. Ponyavina, B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, 68 Nezavisimosti Ave., Minsk, 220072 Belarus
S. A. Tikhomirov, B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, 68 Nezavisimosti Ave., Minsk, 220072 Belarus
L. V. Baran, Belarusian State University, Minsk, Belarus
A theory has been developed for quasi-phase-matched generation of a wave at a sum-frequency within a constant-intensity approximation.
In contrast to a constant-field approximation, the constant-intensity approach has been found to give an optimum pump intensity
value at which the conversion efficiency reaches its maximum. Analytical expressions have been derived for optimal values
of the problem’s parameters. Ways to enhance the power of the coherent optical radiation are shown and analyzed. This will
make it possible, in particular, to increase the power in an RGB-source color for which the sum-frequency generation is responsible.
Content Type Journal Article
Pages 659-667
DOI 10.1007/s10812-011-9514-x
Authors
R. J. Kasumova, Baku State University, 23 Acad. Z. Khalilov St., Baku, AZ1148 Azerbaijan
ZnS:Cu nanocrystals capped with different capping molecules have been successfully synthesized by a simple aqueous method.
The prepared nanocrystals were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive
analysis by X-rays (EDAX). The surface characterization of the nanocrystals was done by FTIR spectroscopy. The effect of capping
agents on absorption and photoluminescence (PL) spectra of the ZnS:Cu nanocrystals was studied. A blue shift of the absorption
peaks was observed and attributed to a quantum confinement effect, which increases the band gap energy. The photoluminescence
spectra of the capped ZnS:Cu nanocrystals showed a broad peak in the range of 460–480 nm. The intensity of the PL spectra
strongly depended on the capping agents.
Content Type Journal Article
Pages 680-685
DOI 10.1007/s10812-011-9517-7
Authors
Ashish Tiwari, Department of Chemistry, Govt. E. R. R. Science P. G. College, Bilaspur, 495006 India
S. A. Khan, Government College Seepat, Bilaspur, 495555 India
R. S. Kher, Department of Physics, Govt. E. R. R. Science P. G. College, Bilaspur, 495006 India
S. J. Dhoble, Department of Physics, RTM University, Nagpur, 440033 India
The possibility for conical singularities of the cross-sectional, cuspidal, and contact types to exist in the vicinity of
optical (usual and singular) axes in a crystal that possesses dichroism, optical activity, and birefringence is shown.
Content Type Journal Article
Pages 668-672
DOI 10.1007/s10812-011-9515-9
Authors
V. S. Merkulov, Scientific-Practical Materials Research Center, National Academy of Sciences of Belarus, 19 P. Brovka St., Minsk, 220072 Belarus
Double-pulse LIBS and ED XRF usabilities for quantitative analysis of Ti in samples of cotton, wool, and viscose fabrics were
compared to each other. The analyzed samples were prepared by stippling a particular fabric with TiO2 nanoparticle sol (particle size 100 nm). Both spectrometers were calibrated with the aid of the same sets of authentic fabric
samples previously analyzed by ICP OES after the microwave digestion. Average values of the Ti concentration calculated from
five repeated measurements of the same sample obtained by LIBS and ED XRF were comparable for all types of the tested materials
(100∙(CTi-LIBS/CTi-ED XRF)) ≅ 96–109%), but the precision of analysis expressed as RSD (relative standard deviation) was usually better for ED XRF
(RSDLIBS from 9 to 25%, RSDED XRF from 3 to 17%). Poor RSD values of LIBS measurements were observed mainly in the case of samples with lower areal weights.
Limits of detection calculated as a triple standard deviation of five repeated measurements of Ti in a sample with the low
concentration of the analyte were comparable for both methods (LODLIBS = from 15 to 97, and LODED XRF = from 21 to 64, all in mg/kg).
Content Type Journal Article
Pages 673-679
DOI 10.1007/s10812-011-9516-8
Authors
M. Pouzar, Department of Environmental and Chemical Engineering, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech Republic
M. Průšová, Department of Textile Chemistry, Faculty of Textile Engineering, Technical University of Liberec, Liberec, Czech Republic
T. Černohorský, Department of Environmental and Chemical Engineering, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech Republic
J. Wiener, Department of Textile Chemistry, Faculty of Textile Engineering, Technical University of Liberec, Liberec, Czech Republic
T. Kratochvil, Department of Environmental and Chemical Engineering, Faculty of Chemical Technology, University of Pardubice, Studentská 573, 532 10 Pardubice, Czech Republic
Relative coefficients of collisional broadening caused by N2O molecules and their temperature dependences are determined for absorption lines (1000–0001 transition, R-branch) of the CO2 molecule.
Content Type Journal Article
Pages 646-649
DOI 10.1007/s10812-011-9512-z
Authors
K. I. Arshinov, Institute of Technical Acoustics, National Academy of Sciences of Belarus, 13 Ludnikov Ave., Vitebsk, 210023 Belarus
A. S. Dudarenok, V. E. Zuev Institute of Atmospheric Optics, Siberian Branch of Russian Academy of Sciences, Tomsk, Russia
N. N. Lavrentieva, V. E. Zuev Institute of Atmospheric Optics, Siberian Branch of Russian Academy of Sciences, Tomsk, Russia
V. V. Nevdakh, Belarusian State Technical University, Minsk, Belarus
Frequencies and intensities of fundamental, overtone, and combination absorption bands have been calculated in an anharmonic
approximation for substituted benzene and ethene, aldehydes, ketones, and alcohols in the range 400–4000 cm–1. The calculated values agree well with the experimental data. It is shown that such a calculation allows one to study and
predict dependences of the frequencies and intensities of the overtone and combination bands on the substance structure.
Content Type Journal Article
Pages 639-645
DOI 10.1007/s10812-011-9511-0
Authors
A. I. Pavlyuchko, Moscow State University of Civil Engineering, Moscow, Russia
E. V. Vasilyev, Moscow State University of Civil Engineering, Moscow, Russia
L. A. Gribov, V. I. Vermadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, 19 Kosygin St., Moscow, 119991 Russia
A new semi-empirical method (mωT or modified ω-technique adapted to thermosolvatochromic effect analysis) based on the first
approximation by a self-consistent field procedure (ω-technique) is proposed to calculate solvatochromic effects of dyes in
various solvents. The method relies on the direct dependence of the relative change of charge at a dye molecule atom influenced
by an external solvent molecule on the atom/molecule interaction energy. The method was validated using the calculation of
solvatochromic and thermosolvatochromic effects for 3,6-tetramethyldiaminophthalimide [4,7-tetramethyldiamino-1H-isoindole-1,3(2H)-dione]
in inert solvents as an example.
Content Type Journal Article
Pages 631-638
DOI 10.1007/s10812-011-9510-1
Authors
K. F. Krivulko, Belarusian State University, 4 Nezavisimosti Ave., Minsk, 220030 Belarus
A. P. Klishchenko, Belarusian State University, 4 Nezavisimosti Ave., Minsk, 220030 Belarus
We have used numerical modeling to study the effect of diffusion and fluctuations in the nonequilibrium carrier density in
the active layer of injection lasers based on an InAsSb/InAsSbP heterostructure on the angular distribution of the output
intensity. We show that diffusion smoothes out the nonequilibrium carrier distribution in the active layer, and the fundamental
lasing mode is stable over a much broader range of stripe contact widths. At the same time, diffusional processes can lead
to formation of local regions with a jump in the density of nonequilibrium charge carriers, fluctuations in which can act
as a source of instability for the fundamental lasing mode. Analysis of the numerical modeling results gives qualitative agreement
with experimental data on the dependence of the angular distribution of the output radiation for different stripe contact
widths.
Content Type Journal Article
Pages 733-737
DOI 10.1007/s10812-011-9525-7
Authors
L. I. Burov, Belorussian State University, 4 prosp. Nezavisimosti, Minsk, 220030 Belarus
A. S. Gorbatsevich, Belorussian State University, 4 prosp. Nezavisimosti, Minsk, 220030 Belarus
M. Jadan, Tafila Technical University, College of Sciences, Applied Physics Department, Tafila, Jordan
V. V. Sherstnev, A. F. Ioffe Physicotechnical Institute, St. Petersburg, Russia
Yu. P. Yakovlev, A. F. Ioffe Physicotechnical Institute, St. Petersburg, Russia
Luminescence regularities have been studied in new erbium/ytterbium materials based on glasses and glass ceramics of a magnesium-aluminosilicate
system containing nanoscale erbium/ytterbium zirconate titanate crystals with the pyrochlore structure. Lifetimes of Yb3+ and Er3+ ions in the 2 F5/2 state and in the 4I11/2 and 4I13/2 states, respectively, and the efficiency of Yb3+ → Er3+ energy transfer have been evaluated. The identified spectral-luminescent characteristics of the studied glasses and glass
ceramics co-doped with erbium and ytterbium ions show that these materials are promising media for producing laser generation
in the spectral range around 1.5 μm.
Content Type Journal Article
Pages 650-658
DOI 10.1007/s10812-011-9513-y
Authors
N. A. Skoptsov, Research Center for Optical Materials and Technologies, Belarusian National Technical University, 65 Nezavisimosti Ave., Bldg. 17, Minsk, 220013 Belarus
I. A. Denisov, Research Center for Optical Materials and Technologies, Belarusian National Technical University, 65 Nezavisimosti Ave., Bldg. 17, Minsk, 220013 Belarus
A. M. Malyarevich, Research Center for Optical Materials and Technologies, Belarusian National Technical University, 65 Nezavisimosti Ave., Bldg. 17, Minsk, 220013 Belarus
K. V. Yumashev, Research Center for Optical Materials and Technologies, Belarusian National Technical University, 65 Nezavisimosti Ave., Bldg. 17, Minsk, 220013 Belarus
O. S. Dymshits, Research and Technological Institute of Optical Materials Science, St. Petersburg, Russia
A. A. Zhilin, Research and Technological Institute of Optical Materials Science, St. Petersburg, Russia
I. P. Alekseeva, Research and Technological Institute of Optical Materials Science, St. Petersburg, Russia
Examples of excitation spectra lines for resonant Rayleigh and Raman scattering by model molecules with a double-well potential
in a vibrational subsystem in both the ground and excited states are calculated based on numerical solutions of a stationary
Schrodinger equation for a particle in a double-well potential. The obtained results demonstrate that the given formalism
can be used, e.g., to establish the mechanism for transferring the proton of an intramolecular H-bond in the excited molecular
electronic state upon monochromatic irradiation using resonant light-scattering spectroscopic data.
Content Type Journal Article
Pages 624-630
DOI 10.1007/s10812-011-9509-7
Authors
V. A. Morozov, N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Ave., Moscow, 119991 Russia
Yu. M. Dubina, V. A. Trapeznikov Institute of Control Sciences, Russian Academy of Sciences, Moscow, Russia
A technique was suggested to transform ab initio molecular force fields calculated using a set of independent vibrational coordinates into a form corresponding to a complete
set of regundand coordinates and reflecting the molecular symmetry. Conditions necessary for the appropriate transformations
to be possible are formulated. The possibility of transforming the force field for the simplest fragment containing regundand
coordinates was demonstrated using ethylene as an example.
Content Type Journal Article
Pages 617-623
DOI 10.1007/s10812-011-9508-8
Authors
G. A. Pitsevich, Belarusian State University, 4 Nezavisimosti Ave., Minsk, 220030 Belarus
A. V. Kostopravova, Belarusian State University, 4 Nezavisimosti Ave., Minsk, 220030 Belarus
D. S. Umreiko, A. N. Sevchenko Institute of Applied Physics Problems, Belarusian State University, Minsk, Belarus
M. A. Ksenofontov, A. N. Sevchenko Institute of Applied Physics Problems, Belarusian State University, Minsk, Belarus
We studied the annihilation kinetics for triplet excitations in isolated pairs of organic molecules and their delayed fluorescence
decay using a new mathematical model for the process. According to this model, the intensity of delayed annihilation fluorescence
(DAF) for isolated pairs is directly proportional to the number of pairs in which both molecules are found in the excited
triplet state. We show that the decrease in such pairs and the decay of their delayed annihilation fluorescence occur according
to an exponential law in the absence of random scatter in the deactivation rate constants for the triplet excitations. The
results of an experimental study of the DAF decay kinetics for 1,12-benzoperylene in n-hexane at 77 K, where triplet–triplet
annihilation occurs in isolated pairs, confirm the validity of the theoretical conclusions.
Content Type Journal Article
Category BRIEF COMMUNICATIONS
Pages 601-604
DOI 10.1007/s10812-011-9504-z
Authors
D. A. Kolosov, Stavropol State University, 1 ul. Pushkina, Stavropol, 355009 Russia
M. I. Deryabin, Stavropol State University, 1 ul. Pushkina, Stavropol, 355009 Russia
I. A. Dobrovol’skaya, Nevinnomyssk State Liberal Arts and Technical Institute, Nevinnomyssk, Russia
I. V. Gadzhialieva, Nevinnomyssk State Liberal Arts and Technical Institute, Nevinnomyssk, Russia
) for fluorescence quenching by Cu2+ ions in a standard sample of humic acid (HA) (IHSS) with monochromatic excitation (λex = 337.1 nm) conditions has been studied in the spectral range 400–600 nm. This is interpreted within a concept implying that
HA macromolecules possess the property of polydispersity, which means that fluorophore-containing sites are different in terms
of chemical nature and spatial accessibility. Modeling data show that the minimum number of spectral components required for
the simulated spectral dependence of 
to agree as closely as possible with that observed experimentally is three.
