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Angular dependence of double electron capture in collisions of C4+ with He |
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| Authors: | L. Pichl R. Suzuki M. Kimura Y. Li R. J. Buenker M. Hoshino Y. Yamazaki |
| Affiliation: | 1. Max Planck Institute for the Physics of Complex Systems, N?thnitzer Str. 38, 01187, Dresden, Germany 2. Computer Center, Hitotsubashi University, Kunitachi, Tokyo, 186-8601, Japan 3. Graduate School of Sciences, Kyushu University, Fukuoka, 812-8581, Japan 4. Fachbereich C-Mathematik und Naturwissenschaften, Bergische Universit?t Wuppertal, 42119, Wuppertal, Germany 5. Department of Physics, Sophia University, 7-1 Kioicho, Tokyo, 102-8554, Japan 6. RIKEN, 2-1 Hirosawa, Wako, 351-0198, Japan |
| Abstract: | In charge-transfer collisions of C4+(1s2 1S) with He (1s2 1S), the process of double electron capture into the ground state C2+ is well-known to dominate other channels by an order of magnitude for projectile energies below 10 keV. This work presents a calculation of differential cross-sections resolved in the angle and energy gain variables, based on an ab initio treatment of electronic states, and compares with the measurements published in the literature (projectile energy E=270, 400, and 470 eV). We also briefly discuss the semi-empirical two-state models developed by experimentalists for this process. |
| Keywords: | 34.70.+e Charge transfer 31.15.Ar Ab initio calculations |
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