Threshold phenomena in ultracold atom-molecule collisions

N. Balakrishnan, R. C. Forrey, A. Dalgarno

Research output: Contribution to journalArticlepeer-review

85 Scopus citations


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′<v, j=0) are calculated for all the vibrational levels of H2 and found to vary by seven orders of magnitude between the deepest level v=0 and the vibrational level v=12.

Original languageEnglish (US)
Pages (from-to)1-4
Number of pages4
JournalChemical Physics Letters
Issue number1-2
StatePublished - Nov 28 1997

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy
  • Physical and Theoretical Chemistry


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