Publication: Quenching of internal rotations versus collisional cooling at ultralow energies for weakly interacting partners: Cs-2((3)Sigma(+)(u)) with He-3,He-4
Files
Program
KU-Authors
KU Authors
Co-Authors
Caruso, D.
Tacconi, M.
Gianturco, F. A.
Publication Date
Language
Type
Embargo Status
NO
Journal Title
Journal ISSN
Volume Title
Alternative Title
Abstract
Quantum-scattering calculations at ultralow (close to 10(-6) cm(-1)) collision energies are carried out for the Cs dimer in its spin-stretched triplet state, interacting with helium. An ab initio potential energy surface is computed and employed, while the target molecule is kept in its ground vibrational state and several excitated initial rotational states are considered in the quantum dynamics. The highly anisotropic interaction is seen to cause, in spite of its weakness, internal energy quenching rates comparable with the efficiency of the collisional cooling of relative kinetic energies. The rates of spin-flip processes are also analyzed and compared with pure rotational quenching events.
Source
Publisher
American Physical Society (APS)
Subject
Optics, Physics
Citation
Has Part
Source
Physical Review A
Book Series Title
Edition
DOI
10.1103/PhysRevA.81.042710