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Dissociative Recombination without a Curve CrossingAb initio calculations show that a curve crossing is not always needed for a high dissociative- recombination cross section. For HeH(+), in which no neutral states cross the ion potential curve, dissociative recombination is driven by the nuclear kinetic-energy operator on adiabatic potential curves. The kinetic-energy derivative operator allows for capture into repulsive curves that are outside of the classical turning points for the nuclear motion. The dominant dissociative route is the C (2)Sigma(+) state leading to H(n = 2) atoms. An analogous mechanism is proposed for the dissociative recombination of H3(+).
Document ID
19970012145
Document Type
Reprint (Version printed in journal)
Authors
Guberman, Steven L.
(Institute for Scientific Research Lexington, MA United States)
Date Acquired
August 17, 2013
Publication Date
June 1, 1994
Publication Information
Publication: Physical Review A
Publisher: American Physical Society
Volume: 49
Issue: 6
ISSN: 1050-2947
Subject Category
Atomic And Molecular Physics
Report/Patent Number
NAS 1.26:203344
NASA-CR-203344
Accession Number
97N70917
Funding Number(s)
CONTRACT_GRANT: NSF ATM-91-22739
CONTRACT_GRANT: NAGw-2832
Distribution Limits
Public
Copyright
Public Use Permitted.
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