About an information theoretical spectral line shape proposed for the collision induced spectroscopies

Abstract

We have investigated the use of translational lineshapes generated from information theory (IT) for collision induced spectroscopies. In several cases of general interest, we find that such IT lineshapes fail to adequately approximate exact lineshapes computed from fundamental theory. The IT profiles are associated with poorly defined parameters, and thus have at best a marginal ability to represent collision induced spectra; other lineshape models are known which provide better approximations to exact lineshapes.