Isotope effects in complex scattering lengths for He collisions with molecular hydrogen

J. L. Nolte, B. H. Yang, P. C. Stancil, Teck Ghee Lee, N. Balakrishnan, R. C. Forrey, A. Dalgarno

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

We examine the effect of theoretically varying the collision-system reduced mass in collisions of He with vibrationally excited molecular hydrogen and observe zero-energy resonances for select atomic "hydrogen" masses less than 1 u or a "helium" mass of 1.95 u. Complex scattering lengths, state-to-state vibrational quenching cross sections, and a low-energy elastic scattering resonance are all studied as a function of collision-system reduced mass. Experimental observations of these phenomena in the cold and ultracold regimes for collisions of He3 and He4 with H2, HD, HT, and DT should be feasible in the near future.

Original languageEnglish (US)
Article number014701
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume81
Issue number1
DOIs
StatePublished - 2010

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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