Collision-induced absorption in the O2 B-band region near 670 nm

被引：14

作者：

Spiering, Frans R. ^{[1
]}

Kiseleva, Maria B. ^{[2
]}

Filippov, Nikolay N. ^{[2
]}

van Kesteren, Line ^{[1
]}

van der Zande, Wim J. ^{[1
]}

机构：

[1] Radboud Univ Nijmegen, Dept Mol & Biophys, IMM, NL-6500 GL Nijmegen, Netherlands

[2] St Petersburg State Univ, Fac Phys, Dept Mol Spect, St Petersburg 198504, Russia

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2011年 / 13卷 / 20期

基金：

俄罗斯基础研究基金会;

关键词：

A-BAND; SYMMETRIZATION POSTULATE; RAYLEIGH-SCATTERING; OXYGEN; PRESSURE; DOPPLER; SPECTRA; COMPLEX; MODEL; TEMPERATURE;

D O I：

10.1039/c1cp20403c

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We have determined the collision-induced absorption (CIA) spectrum in the O-2 B-band in pure oxygen. We present absolute extinction coefficients of the minimums in between rotational lines using cavity ring-down spectroscopy. The measured extinction is corrected for the B-band magnetic dipole absorption using a model which includes line-mixing. The remaining extinction consists of collision-induced absorption and Rayleigh scattering. We retrieve the magnitude of the Rayleigh scattering and the CIA spectrum based on their individual different behavior with density. The CIA spectrum of the B-band resembles that of the oxygen A-band in shape but not in magnitude. The contribution of CIA to the total B-band absorption is 40% higher in comparison to that of the A-band.

引用

页码：9616 / 9621

页数：6

共 44 条

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