A5036446344- Spectroscopy and Laser Applications
- Atmospheric Ozone and Climate
- Atmospheric and Environmental Gas Dynamics
- Advanced Chemical Physics Studies
- Molecular Spectroscopy and Structure
- Laser Design and Applications
- Spectroscopy and Quantum Chemical Studies
- Gas Dynamics and Kinetic Theory
- Radiative Heat Transfer Studies
- Advanced Power Generation Technologies
- Atmospheric aerosols and clouds
- Atomic and Subatomic Physics Research
- Laser-Matter Interactions and Applications
- Mechanical and Thermal Properties Analysis
- Iron and Steelmaking Processes
- Atmospheric chemistry and aerosols
- Vehicle emissions and performance
St Petersburg University
2001-2020
Institute of Physics
1995-2005
Université de Rennes
1997-1999
Centre National de la Recherche Scientifique
1999
Czech Academy of Sciences, Institute of Physics
1999
The band shape of the ν1 hydrogen fluoride stretch in H2O⋯HF and H2O⋯DF complexes was studied gas phase. spectra H2O/HF mixtures at 293 K cells 20 1200 cm long were recorded range 4200–3000 cm−1 a resolution 0.2−0.02 cm−1. 1 : complex region ν1(HF) absorption obtained by subtracting calculated free H2O HF molecules from experimental spectra. asymmetric has low-frequency head, an extended high-frequency wing, characteristic vibrational structure. reconstructed nonempirically as superposition...
Line mixing effects are studied in the v3 band of CH4 perturbed by Ar and He at room temperature. Experiments have been made 2800–3200 cm−1 spectral region using four different setups. They cover a wide range total densities, including low (0.25–2 atm), medium (25–100 high (200–1000 atm) pressure conditions. Analysis spectra demonstrates that shapes (of band, Q branch, P R manifolds,…) significantly influenced line mixing. The theoretical approach proposed preceding paper is used order to...
Extensive experimental studies of room-temperature carbon dioxide absorption coefficients are reported for a wide range wavenumbers and pressures requested in atmospheric spectra modelling. The quality measurements is optimised by the use two complementary setups with long- short-path optical cells low high gas densities, respectively. recorded provide representative picture band-shape evolutions from gaseous to nearly liquid phases CO2 enable theoretical analysis line-mixing effects....
A measurement of the infrared collision-induced absorption spectrum collisional pairs Ar and Xe atoms is reported. An improved empirical dipole model obtained, which, if combined with quantum line-shape computations, permits an accurate reproduction measured spectrum.
Abstract Spectra of CF4 as pure gas and in mixtures with gaseous He, Ar, Xe N2 were obtained the region forbidden ν2 band at pressures from about 1 atm up to 100 ambient temperature. The absorption consists two components depending on pressure. first, an integrated intensity (cm−2 Amagat−1) that is independent pressure, arises through Coriolis or intramolecular interactions. second, varying linearly partial attributable additional arising during intermolecular binary collisions. each these...
The paper reports on studies of the possibility transfer adjustable parameters line mixing model describing ν3 absorption band shape CH4 in helium to case forbidden ν2 shape. This provides a reasonable overall agreement with measured spectra, deviations greater than experimental uncertainties remaining some J-manifolds. has been improved by taking into account spectral lines same initial level. It was found that description shapes certain manifolds can be fitting corresponding matrix...
This study seeks to determine the origin of several features observed in behavior at high j values shift cross sections 0-0 and 0-1 bands HF a bath argon. These were not explained earlier quantum mechanical calculations. A semi-classical (classical path) simplified formalism is used demonstrate that depend sensitively on vibration-rotation coupling limit.
We studied the pure rotational lineshapes of HF in gaseous argon (30–330 Amagat) at ambient temperature. The measured absorption coefficients were fitted by a sum Rosenkranz profiles to obtain widths, shifts, and asymmetry parameters. compared them with literature data ascribed detected line mixing effect whose influence was considered framework semiclassical approach.