Abstract
The broadening and shift coefficients of more than 100 absorption lines of the ν2 + ν3 band of water vapor that are induced by the pressure of helium are measured and calculated. The broadening and shift coefficients are obtained from analysis of the room-temperature absorption spectra of an H2O-He mixture measured with a resolution of 0.007 cm-1 on a Fourier spectrometer in a large range of helium pressures. The specific features in the rotational dependence of the line center shifts are determined, which, in contrast to the broadening induced by other gases, are mainly positive. The calculated coefficients of the line broadening and shift of line centers are determined by a semiclassical method. An unusual dependence of the shift coefficients is explained by the rotational dependence of the intermolecular isotropic interaction potential.
| Original language | English |
|---|---|
| Pages (from-to) | 14-20 |
| Number of pages | 7 |
| Journal | Optics and Spectroscopy (English translation of Optika i Spektroskopiya) |
| Volume | 105 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jul 2008 |
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ASJC Scopus subject areas
- Spectroscopy
- Atomic and Molecular Physics, and Optics
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Broadening and shift of lines of the ν2 + ν3 band of water vapor induced by helium pressure. / Solodov, A. M.; Starikov, V. I.
In: Optics and Spectroscopy (English translation of Optika i Spektroskopiya), Vol. 105, No. 1, 07.2008, p. 14-20.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Broadening and shift of lines of the ν2 + ν3 band of water vapor induced by helium pressure
AU - Solodov, A. M.
AU - Starikov, V. I.
PY - 2008/7
Y1 - 2008/7
N2 - The broadening and shift coefficients of more than 100 absorption lines of the ν2 + ν3 band of water vapor that are induced by the pressure of helium are measured and calculated. The broadening and shift coefficients are obtained from analysis of the room-temperature absorption spectra of an H2O-He mixture measured with a resolution of 0.007 cm-1 on a Fourier spectrometer in a large range of helium pressures. The specific features in the rotational dependence of the line center shifts are determined, which, in contrast to the broadening induced by other gases, are mainly positive. The calculated coefficients of the line broadening and shift of line centers are determined by a semiclassical method. An unusual dependence of the shift coefficients is explained by the rotational dependence of the intermolecular isotropic interaction potential.
AB - The broadening and shift coefficients of more than 100 absorption lines of the ν2 + ν3 band of water vapor that are induced by the pressure of helium are measured and calculated. The broadening and shift coefficients are obtained from analysis of the room-temperature absorption spectra of an H2O-He mixture measured with a resolution of 0.007 cm-1 on a Fourier spectrometer in a large range of helium pressures. The specific features in the rotational dependence of the line center shifts are determined, which, in contrast to the broadening induced by other gases, are mainly positive. The calculated coefficients of the line broadening and shift of line centers are determined by a semiclassical method. An unusual dependence of the shift coefficients is explained by the rotational dependence of the intermolecular isotropic interaction potential.
UR - http://www.scopus.com/inward/record.url?scp=47749139287&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=47749139287&partnerID=8YFLogxK
U2 - 10.1134/S0030400X08070035
DO - 10.1134/S0030400X08070035
M3 - Article
AN - SCOPUS:47749139287
VL - 105
SP - 14
EP - 20
JO - Optics and Spectroscopy (English translation of Optika i Spektroskopiya)
JF - Optics and Spectroscopy (English translation of Optika i Spektroskopiya)
SN - 0030-400X
IS - 1
ER -