利用红外二极管激光光谱仪测定硫化氢ν1、ν2和ν3波段吸收线的氮展宽

Nitrogen Broadening of Absorption Lines in the nu1, nu2, and nu3 Bands of H2S Determined by Applying an IR Diode Laser Spectrometer.

作者信息

Meusel I, Sumpf B, Kronfeldt H

机构信息

Optisches Institut der Technischen Universitat Berlin, Sekretariat PN 0-1, Hardenbergstr. 36, Berlin, 10623, Germany

出版信息

J Mol Spectrosc. 1997 Oct;185(2):370-3. doi: 10.1006/jmsp.1997.7388.

DOI:10.1006/jmsp.1997.7388

PMID:9398574

Abstract

With an infrared diode laser spectrometer in pulse mode we studied the N2 broadening of H2S absorption lines in the nu1, nu2, and nu3 bands. Altogether 22 lines were investigated: 16 lines from the R branch of the nu1 band (3 </= J" </= 17, 0 </= Ka" </= 6), 5 lines from the R branch of the nu3 band (3 </= J" </= 7, 1 </= Ka" </= 7), and one line from the R branch of the nu2 band (J" = 4, Ka" = 3). The nitrogen broadening coefficients varies strongly between 0.028 cm-1/atm </= gammaH2S-N2 </= 0.109 cm-1/atm. We observed a pronounced J" dependence in the studied quantum number range; i.e., with increasing J" there is a decrease of the broadening coefficient gammaH2S-N2. In contrast the Ka" dependence shows only a weak tendency. For gammaH2S-N2 of the nu1, nu2, and nu3 bands there is no significant difference between lines with comparable rotational quantum numbers. Copyright 1997 Academic Press. Copyright 1997Academic Press

摘要

我们使用脉冲模式的红外二极管激光光谱仪研究了H2S在ν1、ν2和ν3波段吸收线的N2展宽。总共研究了22条谱线：16条来自ν1波段R支（3≤J''≤17，0≤Ka''≤6），5条来自ν3波段R支（3≤J''≤7，1≤Ka''≤7），以及1条来自ν2波段R支（J'' = 4，Ka'' = 3）。氮气展宽系数在0.028 cm-1/atm≤γH2S-N2≤0.109 cm-1/atm之间变化很大。在研究的量子数范围内，我们观察到展宽系数γH2S-N2有明显的J''依赖性；即随着J''的增加，展宽系数γH2S-N2减小。相比之下，Ka''依赖性仅显示出微弱的趋势。对于ν1、ν2和ν3波段的γH2S-N2，具有可比转动量子数的谱线之间没有显著差异。版权所有1997年学术出版社。版权所有1997年学术出版社