Radiative Double-Electron Capture by Bare and One-Electron Ions on Gas Targets

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....

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Bibliographic Details
Published in:Physical review letters 2020-04, Vol.124 (13), p.133401-133401, Article 133401
Main Authors: La Mantia, D S, Kumara, P N S, Buglione, S L, McCoy, C P, Taylor, C J, White, J S, Kayani, A, Tanis, J A
Format: Article
Language:English
Subjects:
Beta decay
Carbon
Electron capture
Electrons
Foils
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Summary: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.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.124.133401