High‐resolution photoabsorption cross‐section measurements of SO2 at 160 K between 199 and 220 nm
High‐resolution photoabsorption cross‐section measurements of SO2 at 160 K between 199 and 220 nm
复制标题
160 K 下 199 至 220 nm 之间 SO2 的高分辨率光吸收截面测量
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
Peter L. Smith
中科院分区：
文献类型：
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作者：
J. Rufus;G. Stark;A. Thorne;J. Pickering;R. Blackwell;D. Blackie;Peter L. Smith
二氧化硫在一定温度范围内的光吸收截面需要解释观测结果，并支持木卫一和金星大气模型。本文报道了在160 K下，用傅里叶变换光谱法在199 ~ 220 nm波长范围内对SO2的高分辨率（λ/Δ λ约为450，000）光吸收截面的测量结果，其中包含了（C）对波浪线（1）B-2 -（X）对波浪线（1）A（1）系统中最强的特征。我们的研究结果与文献值在较低的分辨率和295 K的横截面记录较早的同一仪器。
Photoabsorption cross sections of sulfur dioxide over a range of temperatures are required to interpret observations and to support models of the atmospheres of Io and Venus. We report high-resolution (lambda/Delta lambda approximate to 450,000) photoabsorption cross-section measurements by Fourier transform spectrometry of SO2 at 160 K in the wavelength region 199 to 220 nm, which encompasses the strongest features in the prominent (C) over tilde (1) B-2 -(X) over tilde (1)A(1) system. Our results are compared with literature values obtained at lower resolutions and with 295 K cross sections recorded earlier with the same instrument.