Temperature dependence of rotational excitation rate coefficients of [formula omitted] in collision with He

Abstract

We report fully-quantum, close-coupling (CC) calculations of inelastic integral cross sections of mercapto radical (SH) collisions with He. Scattering calculations, which take into account the fine-structure of SH, are done on a grid of collision energies large enough to ensure converged state-to-state rate coefficients for temperatures ranging from 1 K up to 350 K. The calculated cross sections and rate coefficients exhibit sizeable, parity-dependent propensities.