State-to-State Cross Sections for Rotationally Inelastic Collision of He with Na₂

Abstract

As a further theoretical study of the collision-induced quantum interference on rotational energy transfer in an atom-diatom system, the differential interference angles for singlet-triplet mixed states of Na 2 system in collision with He were calculated based on the first-Born approximation of time-dependent perturbation theory, taking into account the anisotropic Lennard-Jones interaction potential and the long-range interaction potential. The relationships of differential interference angle versus impact parameter including collision parameter, velocity, are obtained. It is beneficial to reduce the loss in molecular cooling and trapping.

Maximum Limit of Rotational energy transfers in C2 - He system and Power gap law

“…The study of rotational inelastic scattering between molecules and neutral atoms at low collision energies is a fast developing field in collision dynamics [1][2].The nature of rotational energy transfer (RET) in collisions of molecules with He, Ar and Ne were studied experimentally [3][4] and theoretically [5][6][7] .…”