A5101932989- Spectroscopy and Laser Applications
- Atmospheric Ozone and Climate
- Atmospheric and Environmental Gas Dynamics
- Laser Design and Applications
- Advanced Chemical Physics Studies
- Atmospheric chemistry and aerosols
- Structural mechanics and materials
- Aerogels and thermal insulation
- Phase Equilibria and Thermodynamics
- Industrial Engineering and Technologies
- Gas Sensing Nanomaterials and Sensors
- Advanced Energy Technologies and Civil Engineering Innovations
- Calibration and Measurement Techniques
- Material Properties and Failure Mechanisms
- Catalytic Processes in Materials Science
- Molecular Spectroscopy and Structure
- Concrete and Cement Materials Research
- Water Quality Monitoring and Analysis
- Sociopolitical Dynamics in Russia
- Geotechnical and Geomechanical Engineering
- Mesoporous Materials and Catalysis
- Innovations in Concrete and Construction Materials
- Spectroscopy Techniques in Biomedical and Chemical Research
- Spectroscopy and Quantum Chemical Studies
- Laser-induced spectroscopy and plasma
Russian Academy of Sciences
2015-2024
V.E. Zuev Institute of Atmospheric Optics
2015-2024
Institute of Spectroscopy
2009-2023
Petersburg State Transport University
2017-2021
Siberian Branch of the Russian Academy of Sciences
2007-2019
Institute of Physico-Technical Problems of the North named VP Larionov
2019
Centre National de la Recherche Scientifique
1995
Abstract The combination band ν5 + ν12 of ethylene, C2H4, has been recorded for the first time with a high resolution Fourier transform spectrometer Bruker IFS 125HR. Assignments transitions and preliminary rotational analysis are made. Two models (Hamiltonian isolated vibrational state Hamiltonian that takes into account resonance interactions) used. Influence local interactions on parameters reproduction power is discussed. Keywords: ethylenehigh-resolution spectraspectroscopic...
The absorption spectrum of the water vapor, confined in nanoporous silica aerogel, was measured within 5000-5600 cm(-1) with IFS 125 HR Fourier spectrometer. It has been shown, that tight confinement molecules by size leads to strong lines broadening and shift. For vapor lines, HWHM are on average 23 times larger than those for free molecules. shift values range from -0.03 0.09 cm(-1). Some spectral have negative data half-widths center shifts some strongest H(2)O presented.
High-resolution spectra of H2O with a high signal/noise ratio (2500 at the absorbance equal 1) were recorded Bruker IFS 125 FTIR spectrometer covering transitions from 5090 to 7490 cm−1 spectral resolution 0.01 cm−1. The multispectrum fitting procedure has been applied recover line parameters measurements using quadratic speed-dependent Voigt (qSDV) profiles which made it possible describe experimental profile noise level. H216O broadening and shift coefficients for 439 lines 7 vibrational...
The water vapor line broadening and shift in the ν 1 + 2 3 band induced by helium pressure were measured using a Bruker IFS 125HR FTIR spectrometer. measurements performed at room temperature spectral resolution of 0.01 cm−1 wide He range. shifting coefficients δ are mainly positive, contrast to center other mono-atomic gases. Calculations γ framework semi-classical method. influence rotational dependence isotropic intermolecular potential accidental resonances H2O molecule on is discussed....
This article is about the ballastless upper structure track operation in Russia. The Rheda 2000 construction was laid at experimental section of railway track. problem cracking founded while using this construction. In order to determine stress-strain condition with terms train dynamic load experiments were carried out by strain gauges. experts got following results: cracks appeared main plate locations fixed maximum tensile stress. Furthermore, rolling-stock speed grows up increasing...
The intensities of minor acetylene isotopologues 12C13CH2 and 12C2HD have been studied from Fourier transform spectra in natural abundance using high optical path length. This study completes the work performed two first paper series (JQSRT 2023;295:108413 JQSRT 2023;311:108771) where 71 bands 12C2H2 were ΔP = 4 spectral region (∼2400-2900 cm−1). In this work, 692 measured line allowed to derive vibrational transition dipole moment squared (and sometimes Herman-Wallis coefficients) for 11 6...
The water vapour line-broadening (γ) and shift (δ) coefficients for 310 lines of 10 vibrational bands ν1, ν3, 2ν2, ν1+ ν2, ν2+ 2ν2 +ν3, 2ν1, 2ν3 ν1 +2ν2 induced by argon pressure were measured with a Bruker IFS HR 125 spectrometer. measurements performed at room temperature, the spectral resolution 0.01 cm–1 over wide range Ar. calculations broadening γ δ in framework semi-classical method. intermolecular potential was taken as sum atom–atom vibrationally rotationally dependent isotropic...
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....