TY - JOUR
AU - A. Volpi
AU - John Bohn
AB - Cold collisions of ground-state oxygen molecules with helium have been investigated in a wide range of cold-collision energies (from 1 μ K up to 10 K) treating the oxygen molecule first as a rigid rotor and then introducing the vibrational degree of freedom. The comparison between the two models shows that at low energies the rigid-rotor approximation is very accurate and able to describe all the dynamical features of the system. The comparison between the two models has also been extended to cases where the interaction potential He − O 2 is made artificially stronger. In this case vibration can perturb rate constants, but fine tuning the rigid-rotor potential can alleviate the discrepancies between the two models.
BT - Physical Review A
DA - 2002-06
DO - 10.1103/PhysRevA.65.064702
N2 - Cold collisions of ground-state oxygen molecules with helium have been investigated in a wide range of cold-collision energies (from 1 μ K up to 10 K) treating the oxygen molecule first as a rigid rotor and then introducing the vibrational degree of freedom. The comparison between the two models shows that at low energies the rigid-rotor approximation is very accurate and able to describe all the dynamical features of the system. The comparison between the two models has also been extended to cases where the interaction potential He − O 2 is made artificially stronger. In this case vibration can perturb rate constants, but fine tuning the rigid-rotor potential can alleviate the discrepancies between the two models.
PY - 2002
EP - 064702
T2 - Physical Review A
TI - Molecular vibration in cold-collision theory
VL - 65
SN - 1050-2947
ER -