Infilling of Vector Collision-Sequence Interference Dips in Collision-Induced Spectra

22nd International Conference on Spectral Line Shapes

Lewis, John Courtenay^1

Memorial University of Newfoundland, St. John's

NL

A1B 3X7, Canada^1

关键词: Central peaks;    Collision-induced absorption;    Infilling;    Lower density;    Statistical modeling;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/548/1/012014/pdf
DOI  :  10.1088/1742-6596/548/1/012014

来源: IOP

【 摘 要 】

The vector interference dip most clearly seen in the fundamental collision-induced band of H2and H2mixtures at densities upward of 20amagat, is well known to persist at densities down to 1 amagat. However, At lower densities it is not seen. Lewis and Herman gave a theory of this infilling. In this work we approach the problem from the simple statistical models for collision-induced absorption introduced by Lewis in 2000 and subsequently much elaborated. The statistical model shows infilling, but rather than a uniformly infilling dip the model shows a small central peak forming in the dip, then broadening with increasing amplitude.