Mutual neutralization of and ions in slow collisionsR. K. Janev1, C. L. Liu2, J. G. Wang2 and J. Yan2
1 Macedonian Academy of Sciences and Arts - P.O. Box 428, 1000 Skopje, Macedonia
2 Institute of Applied Physics and Computational Mathematics P.O. Box 8009-57, Beijing, PRC
received 29 November 2005; accepted in final form 21 March 2006
published online 12 April 2006
The process of mutual neutralization of H3 + and H - ions in the CM collision energy range is studied within the multi-channel Landau-Zener model. From the multitude of covalent states only the states (2s) 2A'1, (3s) 2A'1 and (3d)2A'1 are strongly coupled with the initial ionic H3 + + H - state. The total mutual-neutralization cross-section has a broad maximum around of about , and below it monotonically increases with decreasing the collision energy, surpassing a value of below . The mutual neutralization of H3 + and H - ions is, therefore, an important process in cold hydrogen plasmas.
34.10.+x - General theories and models of atomic and molecular collisions and interactions (including statistical theories, transition state, stochastic and trajectory models, etc.).
34.70.+e - Charge transfer.
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