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Electron transfer and ionization in collisions between protons and the ions He/sup +/, Li/sup 2+/, Be/sup 3+/, B/sup 4+/, and C/sup 5+/ studied with the use of a Sturmian basis

Journal Article · · Phys. Rev. A; (United States)

Total cross sections are reported for electron transfer and ionization in collisions between protons and the hydrogenic ions Be/sup 3+/, B/sup 4+/, and C/sup 5+/, and results are presented for He/sup +/ and Li/sup 2+/ in addition to those previously reported. Proton energies relative to the target ion are in the range 17.5--150 keV for He/sup +/ targets, increasing with the target's nuclear charge to 150--600 keV for C/sup 5+/ targets. Within these energy ranges the electron-transfer cross sections reach their peak values, and the ionization cross sections approach peak values from below. A coupled-Sturmian-pseudostate approach has been taken, and the largest-basis results are estimated to be converged to within 10% at energies where the electron-transfer cross sections peak. With sufficiently large bases, the cross-section curves vary smoothly and regularly with energy and the target's nuclear charge. Scaling rules for these curves are examined and compared with the simple scaling laws in the Born approximations.

Research Organization:
Department of Physics, Pennsylvania State University, Wilkes-Barre Campus, Lehman, Pennsylvania 18627
OSTI ID:
5859686
Journal Information:
Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 35:9; ISSN PLRAA
Country of Publication:
United States
Language:
English

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Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
BERYLLIUM IONS
BORN APPROXIMATION
BORON IONS
CARBON IONS
CATIONS
CHARGE EXCHANGE
CHARGE STATES
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
ENERGY DEPENDENCE
HELIUM IONS
HYDROGEN IONS
HYDROGEN IONS 1 PLUS
ION COLLISIONS
ION-ION COLLISIONS
IONIZATION
IONS
LITHIUM IONS
MULTICHARGED IONS
SCALING LAWS