Electron capture by multicharged ions from atomic hydrogen at near-thermal collision energies
Journal Article
·
· Bulletin of the American Physical Society
OSTI ID:396459
- Oak Ridge National Laboratory, TN (United States)
The ORNL ion-atom merged-beams apparatus is being used to measure absolute total electron capture by multicharged ions from atomic hydrogen from keV/u to 20 meV/u collision energy. Measurements with Si{sup 4+} + D which are compared to fully quantal molecular-orbital coupled-channel calculations for H and D, exhibit a l/v increase at low energies and a surprisingly strong isotope effect. Both are attributed to trajectory effects of the ion-induced dipole attraction. Measurements with N{sup 2+} show strong differences with earlier hydrogen furnace measurments below 1 keV/u but agree with calculations at low energies which provide improved rate coefficients relevant to the study of photoionized nebulae. Measurements with C{sup 4+} are in progress.
- OSTI ID:
- 396459
- Report Number(s):
- CONF-9605105--
- Journal Information:
- Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 3 Vol. 41; ISSN BAPSA6; ISSN 0003-0503
- Country of Publication:
- United States
- Language:
- English
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