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Published on: July 27, 2018
Radiative Double-Electron Capture by Bare and One-Electron Ions on Gas Targets
D S La Mantia1, P N S Kumara1, S L Buglione1
1Western Michigan University, Kalamazoo, Michigan 49008, USA.
Abstract:
Radiative double-electron capture (RDEC) involves the transfer of two electrons with the simultaneous emission of a single photon. This process, which can be viewed as the inverse of double photoionzation, has been studied for 2.11 MeV/u F^{9+} and F^{8+} ions striking gas targets of N_{2} and Ne. The existence of RDEC is conclusively shown for both targets and the results are compared with earlier O^{8+} and F^{9+} findings for thin-foil carbon and with theory. The data for the carbon target showed some evidence for the existence of RDEC, but the interpretation was clouded by high-probability, unavoidable multiple collisions causing the exiting charge state to be increased.
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