Photofragmentation of Water and Hydrogen Sulphide in the First Continuum: A Critical Survey

摘要

Photofragmentation of H sub 2 O and H sub 2 S in the first absorption continuum has been investigated experimentally and theoretically by several authors. The fragmentation dynamics of both molecules are reviewed in this article. While the excited sup 1 B sub 1 state in H sub 2 O is responsible for the first continuum, ambiguity exists in the true nature of the upper state of the first continuum in H sub 2 S. From the evidence available so far, it is proposed that both in water and hydrogen sulphide, a single state of B sub 1 symmetry, which is of Rydberg type for short internuclear distances and of valence type for large internuclear distances, is the possible upper state which dissociates to produce the absorption continuum. (author). Refs. (Atomindex citation 19:047650)