Rotational energy transfer of SH(X 2 Π, v′=0, J′=0.5-10.5) by collision with Ar: λ-doublet resolved transition propensity
Journal
ChemPhysChem
Journal Volume
13
Journal Issue
1
Pages
274-280
Date Issued
2012
Author(s)
Tsai, P.-Y.
KING-CHUEN LIN
Abstract
The behavior of Λ-doublet resolved rotational energy transfer (RET) by Ar collisions within the SH(X(2)Π, v''=0) state is characterized. The matrix elements of terms in the interaction potential responsible for interference effects are calculated to explain the propensity rules for collision-induced transitions within and between spin-orbit manifolds. In this manner, the physical mechanisms responsible for the F(1)-F(1), F(2)-F(2), and F(1)-F(2) transitions may be reasonably identified. As collision energy increases, the propensity for collisional population of the final e or f level is replaced by the e/f-conserving propensity. Such a change in propensity rule can be predicted in terms of energy sudden approximation at high J limit for the pure Hund's case scheme.
SDGs
Type
journal article