Angular Resolved Energy Gain Spectroscopy to Study Double Electron-Capture Processes in Very Slow C4+–He Collisions

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Published under licence by IOP Publishing Ltd
, , Citation Masamitsu Hoshino et al 2001 Phys. Scr. 2001 339 DOI 10.1238/Physica.Topical.092a00339

1402-4896/2001/T92/339

Abstract

Angular distribution of C2+ ions produced in C4+(1s2) + He → C2+(1s22s2) + He2+ at collision energy of 270 and 470 eV are presented. Measurements have been carried out with an experimental setup for the state selective differential cross section measurements of electron capture processes which utilizes the 14.5 GHz Caprice Electron Cyclotron Resonance (ECR) ion source at RIKEN. It is found that results of calculations based on the potential, which was obtained from the previous experimental results at 1520 eV, do not reproduce the present experimental results at 270 and 470 eV.

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10.1238/Physica.Topical.092a00339