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Title: Adiabatic theory for anisotropic cold molecule collisions

We developed an adiabatic theory for cold anisotropic collisions between slow atoms and cold molecules. It enables us to investigate the importance of the couplings between the projection states of the rotational motion of the atom about the molecular axis of the diatom. We tested our theory using the recent results from the Penning ionization reaction experiment {sup 4}He(1s2s {sup 3}S) + HD(1s{sup 2}) → {sup 4}He(1s{sup 2}) + HD{sup +}(1s) + e{sup −} [Lavert-Ofir et al., Nat. Chem. 6, 332 (2014)] and demonstrated that the couplings have strong effect on positions of shape resonances. The theory we derived provides cross sections which are in a very good agreement with the experimental findings.
Authors:
 [1] ;  [2] ; ;  [3] ;  [1] ;  [4]
  1. Schulich Faculty of Chemistry, Technion–Israel Institute of Technology, Haifa 32000 (Israel)
  2. (Poland)
  3. Department of Chemical Physics, Weizmann Institute of Science, Rehovot 76100 (Israel)
  4. (Israel)
Publication Date:
OSTI Identifier:
22493536
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Chemical Physics; Journal Volume: 143; Journal Issue: 7; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ANISOTROPY; ATOM COLLISIONS; ATOMS; COUPLING; CROSS SECTIONS; DEUTERIUM; DIATOMS; ELECTRONS; HELIUM 4; HYDROGEN; IONIZATION; MOLECULE COLLISIONS; MOLECULES; PENNING EFFECT; RESONANCE