Research output: Contribution to journal › Article › peer-review
Vibrational shifts of absorption bands of linear molecules diluted in high-density rare gases : Measurements and modeling for CO2-Rg and OCS-Rg. / Troitsyna, L.; Asfin, R.; Gennadiev, N.; Buldyreva, J.; Filippov, N.
In: Journal of Quantitative Spectroscopy and Radiative Transfer, Vol. 246, 106935, 05.2020.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Vibrational shifts of absorption bands of linear molecules diluted in high-density rare gases
T2 - Measurements and modeling for CO2-Rg and OCS-Rg
AU - Troitsyna, L.
AU - Asfin, R.
AU - Gennadiev, N.
AU - Buldyreva, J.
AU - Filippov, N.
PY - 2020/5
Y1 - 2020/5
N2 - Increase of buffer gas pressure causes redistribution of intensity in the IR absorption bands and, indicating the presence of vibrational perturbation, changes the first spectral moment value responsible for the band-origin position. Band-origin shift coefficients for the ν3, 2ν3 and ν2 bands of OCS and the ν3 band of CO2 diluted in high-density Ar, Kr and Xe are measured and calculated by two methods: directly with available in the literature vibrationally dependent potential-energy surfaces for both initial and final vibrational states and assuming that vibrational dependence arises from the interaction of the permanent /transient dipole moment of the absorbing molecule and the dipole moment induced on the perturber. A comparative analysis of results is given, showing a general underestimation of calculations with respect to measurements.
AB - Increase of buffer gas pressure causes redistribution of intensity in the IR absorption bands and, indicating the presence of vibrational perturbation, changes the first spectral moment value responsible for the band-origin position. Band-origin shift coefficients for the ν3, 2ν3 and ν2 bands of OCS and the ν3 band of CO2 diluted in high-density Ar, Kr and Xe are measured and calculated by two methods: directly with available in the literature vibrationally dependent potential-energy surfaces for both initial and final vibrational states and assuming that vibrational dependence arises from the interaction of the permanent /transient dipole moment of the absorbing molecule and the dipole moment induced on the perturber. A comparative analysis of results is given, showing a general underestimation of calculations with respect to measurements.
KW - Band-origin shift
KW - Carbon dioxide
KW - Carbonyl sulfide
KW - DID model
KW - Infrared absorption spectra
KW - Rare gases
KW - Spectral moments
KW - Vibrational dependence
KW - COMPLEX
KW - H2O
KW - MICROWAVE
KW - COLLISION
KW - XE-CO2
KW - AR
KW - INFRARED-SPECTRA
KW - POTENTIAL-ENERGY SURFACE
UR - http://www.scopus.com/inward/record.url?scp=85081119660&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/9e4a7e22-ee21-3574-8fe5-77155171b5ae/
U2 - 10.1016/j.jqsrt.2020.106935
DO - 10.1016/j.jqsrt.2020.106935
M3 - Article
AN - SCOPUS:85081119660
VL - 246
JO - Journal of Quantitative Spectroscopy and Radiative Transfer
JF - Journal of Quantitative Spectroscopy and Radiative Transfer
SN - 0022-4073
M1 - 106935
ER -
ID: 52314405