Abstract

The results obtained at the Institute of Atmospheric Optics, Siberian Branch, Russian Academy of Sciences, and abroad in studying the broadening and shifts of H₂O absorption lines by monatomic gases He, Ar, Kr, and Xe are reviewed. The experimental studies at the Institute were carried out in the spectral range 3200–11 200 cm⁻¹ using a Bruker IFS 125HR Fourier spectrometer. The broadening and shift coefficients were measured for the lines of 24 vibrational bands with maxima of vibrational quantum numbers v₁ = 3, v₂ = 6, and v₃ = 3 and of rotational quantum numbers J = 14 and K_a = 8. The calculations were carried out by the semiclassical method using effective vibrationally dependent potentials. The experimental and calculated values of the broadening and shift coefficients are compared. Using the analytical model γ(sur), available experimental data on the broadening coefficients are analyzed, and their incompatibility is revealed in some cases. The model parameters γ(sur) are determined which allow generating the coefficients of broadening of H₂O absorption lines by He, Ar, Kr, and Xe atoms in the range 350–14 000 cm⁻¹.

中文翻译：

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宽光谱范围内单原子气体 H2O 吸收线展宽和移动的实验和理论分析

摘要

综述了俄罗斯科学院西伯利亚分院大气光学研究所国内外单原子气体He、Ar、Kr、Xe对H _{2 O吸收线展宽和移动的研究成果。}该研究所的实验研究是使用布鲁克 IFS 125HR 傅里叶光谱仪在 3200–11 200 cm ^{-1的光谱范围内进行的。}测量了振动量子数v ₁ = 3、v ₂  = 6 和v ₃ = 3 最大值的 24 个振动带以及旋转量子数J = 14 和Ka的谱线的展宽和位移_系数。= 8. 使用有效振动相关势通过半经典方法进行计算。比较了展宽系数和位移系数的实验值和计算值。使用解析模型γ(sur)，对展宽系数的现有实验数据进行了分析，并揭示了它们在某些情况下的不兼容性。确定模型参数γ(sur)，其允许生成He、Ar、Kr和Xe原子在350-14 000 cm ^{-1范围内的H} ₂ O吸收线展宽系数。