Shifting and broadening in the fundamental band of CO highly diluted in He and Ar: A comparison with theory
Shifting and broadening in the fundamental band of CO highly diluted in He and Ar: A comparison with theory
复制标题
在 He 和 Ar 中高度稀释的 CO 基带的移动和展宽：与理论的比较
DOI：
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
Jean
中科院分区：
文献类型：
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作者：
C. Luo;R. Wehr;J. Drummond;A. May;F. Thibault;J. Boissoles;J. Launay;C. Boulet;J. Bouanich;Jean
我们测量了 296 K 下在 He 和 Ar 中高度稀释的 CO 基带的振动谱线的位移和宽度。位移被分解为谱线号 m 中的奇数和偶数部分。然后将这些结果与使用最知名的相互作用势进行的紧密耦合计算进行比较。加宽和偏移的计算值和测量值之间总体一致。此外，结果表明，将位移分解为以 m 为单位的奇数部分和偶数部分，是一种强大的工具，可以分离出相互作用的各向同性和各向异性部分对位移的相对贡献，以及如果存在差异则需要纠正哪一部分。因此，可以将位移测量添加到可用于确定可靠的相互作用势的实验列表中。结果还表明，在给定潜力的情况下，紧密耦合计算是准确的，并且可用于确认或建立展宽或移动等的温度依赖性的经验模型。这种建模在大气物理学中很重要。
We present measurements of the shifts and widths of the rovibrational lines of the fundamental band of CO highly diluted in He and Ar at 296 K. The shifts are decomposed into parts odd and even in the line number, m. These are then compared with close coupled calculations carried out with the best known interaction potentials. There is general agreement between the calculated and measured values of the broadening and shifting. Furthermore, the results illustrate that the decomposition of the shifts into parts, odd and even in m, is a powerful tool for separating out the relative contributions of the isotropic and anisotropic part of the interaction to the shifts and which part needs to be corrected if there is a discrepancy. Thus, shift measurements can be added to the list of experiments that may be used to determine reliable interaction potentials. The results also show, given a potential, that close coupled calculations are accurate and could be used to confirm or establish empirical models of the temperature dependence of the broadening or shifting, etc. Such modeling is important at atmospheric physics.