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Analysis of the He-, Ar- and Kr-broadening coefficients of water vapor transitions in a wide spectral region.
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy ( IF 4.4 ) Pub Date : 2020-09-01 , DOI: 10.1016/j.saa.2020.118883
V I Starikov 1 , T M Petrova 2 , A M Solodov 2 , A A Solodov 2 , V M Deichuli 2
Affiliation  

An analysis of the measured He-, Ar- and Kr- broadening coefficients γ for 1575 water vapor transitions of 27 vibrational bands belonging to the 0.6–11,200 cm−1 spectral region is performed using an empirical function that contains adjustable parameters. A universal function is detected during the analysis. This function depends on the parameters that are common for all perturbers A = (He, Ar or Kr). A universal function multiplied by one additional parameter x20(A) determines the broadening coefficients γ(A) for each perturber A = (He, Ar or Kr).Two fitting procedures are used. The first considers the fit of measured γ(exp) for individual rotational branches while the other considers the global fit of all 1575 measured γ(exp). In the second procedure, ratios of γ(Kr)/γ(He) = 2.543 ± 0.040 and γ(Kr)/γ(Ar) = 1.252 ± 0.036 are found. The coefficients derived from the fitted parameters are compared statistically to measured coefficients.



中文翻译:

分析宽光谱区域中水蒸气跃迁的He,Ar和Kr增宽系数。

使用包含可调参数的经验函数,对属于0.6–11,200 cm -1光谱区域的27个振动带的1575个水蒸气跃迁的测得的He,Ar和Kr展宽系数γ进行分析。在分析过程中检测到通用功能。此功能取决于所有扰动A =(He,Ar或Kr)通用的参数。通用函数乘以一个附加参数x 20(A)确定每个扰动器A =(He,Ar或Kr)的加宽系数γ(A)。使用两种拟合程序。第一个考虑单个旋转分支的测得γ(exp)的拟合,而另一个考虑所有1575个测得的γ(exp)的全局拟合。在第二步中,发现γ(Kr)/γ(He)= 2.543±0.040和γ(Kr)/γ(Ar)= 1.252±0.036。从拟合参数得出的系数在统计上与测得的系数进行比较。

更新日期:2020-09-12
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