TY - JOUR
T1 - Threshold phenomena in ultracold atom-molecule collisions
AU - Balakrishnan, N.
AU - Forrey, R. C.
AU - Dalgarno, A.
N1 - Funding Information:
These calculations were initiated in response to queries about vibrational quenching efficiencies at low temperatures from Dr. D. Kleppner and Dr. R.G. Hulet. We thank Dr. H. Friedrich for stimulating discussions and Dr. W.C. Stwalley for his instructive comments on an earlier draft. This work was supported by the US Department of Energy, Office of Basic Energy Sciences, Office of Energy Research (RCF), and by the National Science Foundation, Division of Atmospheric Science (NB).
PY - 1997/11/28
Y1 - 1997/11/28
N2 - Vibrational relaxation cross sections for an atom-molecule collision are calculated by explicit numerical solution of the coupled equations of scattering theory and shown to follow an inverse velocity dependence at very low initial kinetic energies of the incident atom, in accordance with Wigner's threshold law. Rate constants for H+H2(v, j=0)→H+H2(v′2 and found to vary by seven orders of magnitude between the deepest level v=0 and the vibrational level v=12.
AB - Vibrational relaxation cross sections for an atom-molecule collision are calculated by explicit numerical solution of the coupled equations of scattering theory and shown to follow an inverse velocity dependence at very low initial kinetic energies of the incident atom, in accordance with Wigner's threshold law. Rate constants for H+H2(v, j=0)→H+H2(v′2 and found to vary by seven orders of magnitude between the deepest level v=0 and the vibrational level v=12.
UR - http://www.scopus.com/inward/record.url?scp=0002993781&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0002993781&partnerID=8YFLogxK
U2 - 10.1016/S0009-2614(97)01051-8
DO - 10.1016/S0009-2614(97)01051-8
M3 - Article
AN - SCOPUS:0002993781
SN - 0009-2614
VL - 280
SP - 1
EP - 4
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 1-2
ER -