Self-broadened 12C16O line shapes in the ν=2←0 band

被引：52

作者：

Brault, JW

Brown, LR

Chackerian, C

Freedman, R

Predoi-Cross, A

Pine, AS

机构：

[1] Alpine Technol, Germantown, MD 20874 USA

[2] Univ Ottawa, Dept Phys, Ottawa, ON K1N 6N5, Canada

[3] NASA, Ames Res Ctr, Stanford, CA 94305 USA

[4] SETI Inst, Stanford, CA 94305 USA

[5] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA

[6] Kitt Peak Natl Observ, Tucson, AZ 85726 USA

来源：

JOURNAL OF MOLECULAR SPECTROSCOPY | 2003年 / 222卷 / 02期

基金：

美国国家航空航天局; 美国国家科学基金会;

关键词：

CO; self broadening and shifts; Dicke narrowing; line mixing; speed dependence; line intensities;

D O I：

10.1016/j.jms.2003.07.002

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

Precise intensities, self-broadenings and shifts have been obtained for the (CO)-C-12-O-16 nu = 2 <-- 0 band from simultaneous fits of low-noise, high-resolution Fourier-transform spectra at pressures from 27 to 80 kPa (200-600 Torr). Observed line shapes exhibit deviations on the order of 1% from the conventional Voigt profile, primarily due to speed-dependent broadening and secondarily to line mixing. Dicke narrowing is reduced by over an order-of-magnitude from the diffusion value, presumably because of correlations between velocity- and phase-changing collisions. (C) 2003 Elsevier Inc. All rights reserved.

引用

页码：220 / 239

页数：20

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