Leading spectral moments for easy computation of pressure effects on rotational lines,Journal of Raman Spectroscopy

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Leading spectral moments for easy computation of pressure effects on rotational lines
Journal of Raman Spectroscopy ( IF 2.4 ) Pub Date : 2020-07-08 , DOI: 10.1002/jrs.5923
Andrei Sokolov _{1,

2} , Alexander Kouzov ₁ , Jeanna Buldyreva ₂

Affiliation

Explicit classical‐limit formulae for two leading spectral moments characterizing the anisotropy of the interaction potential are derived for fast collisions of linear rotators in the binary regime. With the help of these moments, model Fourier‐transforms of the time‐correlation functions comprising non‐Markovian effects are restored, which enables a novel and straight approach to pressure transformation of broad spectral bands and pressure‐broadening characteristics of (vib)rotational spectral lines, as demonstrated on a simple Markov‐limit example of isotropic and anisotropic Raman line widths of molecular nitrogen.

中文翻译：

领先的频谱矩，可轻松计算旋转管路上的压力影响

对于二元状态下线性旋转器的快速碰撞，推导了表征相互作用势各向异性的两个主要谱矩的显式经典极限公式。在这些时刻的帮助下，恢复了包含非马尔可夫效应的时间相关函数的模型傅里叶变换，这为宽谱带的压力转换和旋转振动频谱的压力扩展特性提供了一种新颖而直接的方法。如分子氮各向同性和各向异性拉曼线宽的简单Markov极限示例所示。

更新日期：2020-07-08

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