Photon-emission studies of slow C{sup 4+}-Ne collisions
- Department of Physics, Uppsala University, Box 530, S-751 21 Uppsala (Sweden)
- Department of Physics, University of Lund, Soelveg. 14, S-223 62 Lund (Sweden)
- Department of Pure and Applied Physics, The Queens University of Belfast, Belfast (United Kingdom)
- Atomic Physics, Stockholm University, Frescativ. 24, S-104 05 Stockholm (Sweden)
We present absolute term- and level-selective cross sections for specific single- and double-electron capture processes in slow (16 keV) C{sup 4+}-Ne collisions. The results are deduced through a combined analysis of earlier translational energy-gain data and the present photon-emission cross sections in the region 40{endash}240 nm. We find that double-electron capture is dominated by processes in which two electrons appear to change orbitals in a single interaction of two diabatic quasimolecular potential curves{emdash}a type of process which rarely has been isolated before. Furthermore, we observe a strong preference for population of 2s2p over 2p{sup 2} configurations in these one-step two-electron capture reactions. This is a remarkable configuration selectivity, since reaction channels leading to 2s2p and 2p{sup 2} configurations cross with the incident channel at almost the same internuclear distances. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 467346
- Journal Information:
- Physical Review A, Journal Name: Physical Review A Journal Issue: 3 Vol. 55; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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