Rotational energy relaxation of individual rotational states in liquids

Abstract

The rates of discrete energy level transitions in solution were used to examine the rotational quantum states in liquids. For rotational quantum states, the transition rate between angular momentum states follows the Landau-Teller rotational relation. The linearized instantaneous normal-mode theory of relaxation within the liquid band shows that the resonant transfer paradigm is successful in reproducing molecular dynamics results for different rotational states.