Importance of the electron capture to the continuum mechanism in heavy-particle collisions of He{sup 2+} with C{sup 5+}(1s)

Journal Article · Mon Aug 15 04:00:00 EDT 2005 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.72.022702· OSTI ID:20718122

Ning, Y ^[1]; He, B; Liu, C L; Yan, J; Wang, J G ^[2]

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1. Graduate School of Chinese Academy of Engineering Physics, Beijing 100088 (China)
2. Key Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100088 (China)

The ionization process due to collision of He{sup 2+} with C{sup 5+}(1s) is investigated using a continuum-distorted-wave eikonal-initial-state approximation. Total, single-, and double-differential cross sections are presented for collision energies from 30 keV/u to 10 MeV/u. A good agreement is obtained between the current total cross section and the previous predictions. The ionization mechanism of electron capture to the projectile continuum (ECC) is found to be important in the lower collision energy range, whose contributions to the total cross section are evaluated to be approximately 12, 9, and 7 % for the projectile energies of 125 keV/u,500 keV/u, and 1 MeV/u respectively. These large ECC contributions could be interpreted by the velocity matching between the projectile ion and the electron initially bound to the target.

• OSTI ID: 20718122
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 2 Vol. 72; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
CARBON IONS
CATIONS
DISTORTED WAVE THEORY
EIKONAL APPROXIMATION
ELECTRON CAPTURE
ELECTRONS
HELIUM IONS
ION-ATOM COLLISIONS
ION-ION COLLISIONS
IONIZATION
KEV RANGE
MEV RANGE