Collisional ionization of C{sup q+} by He{sup 2+} and its applications in the inertial controlled fusion diagnostics

Journal Article · Thu Feb 15 04:00:00 EST 2007 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.75.022713· OSTI ID:20982127

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

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1. The Key Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100088 (China)

The ionization process in collisions of He{sup 2+} with C{sup q+} (q=0-5) is investigated using a continuum-distorted-wave eikonal-initial-state approximation. Total and single- and double-differential cross sections for 1s and 2s electrons are calculated for projectile energies from 30 keV/u to 10 MeV/u. From the double-differential cross sections at an electron-ejection angle of {theta}=0 degree sign , the variation of ionization mechanisms with q has been studied and their dependences on the projectile energies and the electron subshells are also discussed. It is found that in the whole energy range considered, the absolute values of soft collision (SC) and binary encounter (BE) peaks decrease with increasing q. For the lower incident energies, the electron capture to the projectile continuum (ECC) peak, as well as SC and BE peaks, decreases with increasing q. For the higher incident energies (>1 MeV/u), the absolute value of the ECC peak increases with increasing q, so that the crossings of cross sections appear for C{sup q+} with different q. This can be explained by the matching of velocities between the projectile and the initially bound active electron in the target. Finally, by comparing the ionization rate coefficients for K-shell electrons of C{sup q+} by ion and electron impacts in an environment of inertial controlled fusion (ICF), the possibility to diagnose the He{sup 2+} distribution in ICF by the characteristic K{alpha} spectrum of C{sup q+} is investigated.

• OSTI ID: 20982127
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 2 Vol. 75; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ALPHA PARTICLES
ATOM-MOLECULE COLLISIONS
CARBON IONS
DIFFERENTIAL CROSS SECTIONS
DISTORTED WAVE THEORY
DISTRIBUTION
EIKONAL APPROXIMATION
ELECTRON CAPTURE
ELECTRONS
HELIUM IONS
ION-ATOM COLLISIONS
IONIZATION
K SHELL
KEV RANGE
MEV RANGE 01-10
MULTICHARGED IONS
PLASMA
PLASMA DIAGNOSTICS