Study of the H2O dipole moment and polarisability vibrational dependence by the analysis of rovibrational line shifts

被引：14

作者：

Starikov, V. I. ^{[1
,2
]}

Petrova, T. M. ^{[3
]}

Solodov, A. M. ^{[3
]}

Solodov, A. A. ^{[3
]}

Deichuli, V. M. ^{[3
,4
]}

机构：

[1] Tomsk State Univ Control Syst & Radio Elect, Dept Adv Math, Lenina Av 40, Tomsk 634050, Russia

[2] Natl Res Tomsk Polytech Univ, Dept Informat Syst, Lenina Av 30, Tomsk 634050, Russia

[3] Russian Acad Sci, Dept Spect, VE Zuev Inst Atmospher Opt, Siberian Branch, 1 Acad Zuev Sq, Tomsk 634021, Russia

[4] Natl Res Tomsk State Univ, Dept Photon & Informat, Lenina Av 36, Tomsk 634050, Russia

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2019年 / 210卷

基金：

俄罗斯基础研究基金会;

关键词：

Water; Dipole moment and polarisability; Line shift; WATER-VAPOR TRANSITIONS; BROADENING PARAMETERS; RAMAN-SPECTRUM; MOLECULES; OPERATOR; WIDTHS; ARGON; AIR;

D O I：

10.1016/j.saa.2018.11.032

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

The study of the H2O dipole moment mu and polarisability alpha vibrational dependence is based on the comparison of experimental and calculated line shifts induced by argon, nitrogen, and air pressure in different H2O vibrational bands. Obtained dependence alpha on the stretching vibrations is in good agreement with the existing ab initio calculations in the literature, but the dependence alpha on the bending vibration is quite different. To clarify the dependence of mu and alpha on the bending vibration, the shifts of selected H2O lines of the 4 nu(2), 5 nu(2), and 6 nu(2) bands induced by argon, hydrogen and helium pressure are measured with the help of a Bruker IFS HR 125 spectrometer at room temperature with a spectral resolution of 0.01 cm(-1). The comparison of experimental and calculated results with different values of mu and alpha line shifts is given. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：275 / 280

页数：6

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