Excitation spectrum of the near-ultraviolet bands of CS2

Abstract

An excitation spectrum of the triplet–singlet band system of CS2 vapor has been measured in the range 365–378 nm using a tunable laser source. Overall intensity is relatively insensitive to pressure in the range (150 m Torr – 340 Torr) tested in these observations. The results indicate that collisions with ground state molecules of CS2 are efficient in promoting intersystem crossing to the ground state, and that the spontaneous emission observed is primarily resonance emission from the state populated by the radiation.