Single-electron-capture processes in collisions of He{sup 2+}, Li{sup q+} (q=1,2,3), C{sup 6+}, and O{sup 8+} ions with helium

Journal Article · Tue Mar 15 00:00:00 EDT 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.83.032706· OSTI ID:21541286

Samanta, R; Purkait, M ^[1]; Mandal, C R ^[2]

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1. Department of Physics, Ramakrishna Mission Residential College, Narendrapur, Kolkata-700103 (India)
2. Department of Physics, Jadavpur University, Kolkata-700032 (India)

Cross sections for single-electron capture in collisions of He{sup 2+}, Li{sup q+} (q = 1,2,3), C{sup 6+}, and O{sup 8+} ions with helium atoms at incident energy ranging from 50 to 5000 keV/amu have been calculated in the framework of four-body boundary-corrected continuum intermediate state (BCCIS-4B) approximation in both prior and post forms. In this formalism, distortion in the final channel related to the Coulomb continuum states of the projectile ion and the active electron in the field of residual target ion are included. In all cases, total single-electron-capture cross sections have been calculated by summing over all contributions up to n = 3 shells and subshells, respectively. It has been observed that the contribution of the capture cross section into the excited states is significant for asymmetric collision (Z{sub P}>Z{sub T}) and is insignificant for symmetric collision. Numerical results for the total cross sections show good agreement with the available experimental findings, particularly in the post form. Post-prior discrepancy has been found to be within 30% except for Li{sup +} + He interactions below 150 keV/amu.

• OSTI ID: 21541286
• Journal Information: Physical Review. A, Vol. 83, Issue 3; Other Information: DOI: 10.1103/PhysRevA.83.032706; (c) 2011 American Institute of Physics; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
APPROXIMATIONS
ASYMMETRY
CARBON IONS
ELECTRON CAPTURE
ELECTRONIC STRUCTURE
EXCITED STATES
FOUR-BODY PROBLEM
HELIUM
HELIUM IONS
INTERMEDIATE STATE
ION-ATOM COLLISIONS
KEV RANGE
LITHIUM IONS
OXYGEN IONS
SYMMETRY
TOTAL CROSS SECTIONS
ATOM COLLISIONS
CALCULATION METHODS
CAPTURE
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
ELEMENTS
ENERGY LEVELS
ENERGY RANGE
FLUIDS
GASES
ION COLLISIONS
IONS
MANY-BODY PROBLEM
NONMETALS
RARE GASES