Triple-center treatment of ionization in p-H collisions

Journal Article · Fri Jun 01 04:00:00 EDT 1984 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.29.3071· OSTI ID:6672504

Winter, T G; Lin, C D

A triple-center atomic-state method is proposed for treating ionization in low-energy ion-atom collisions. This method intrinsically accounts for the Wannier mechanism, in which the electron will not have been removed in a slow collision unless it is asymptotically at the point of unstable equilibrium between the nuclei (the chosen third center). When applied to p-H collisions, the method shows that most of the ionized electrons stay near the third center and that direct Coulomb ionization and charge transfer to the continuum: accounted for by normal double-center methods: are less important: The triple-center method dramatically raises the cross section above that obtained using a double-center pseudostate basis, bringing it closer to the single early experimental curve at energies below 15 keV.

• Research Organization: Department of Physics, Pennsylvania State University, Wilkes-Barre Campus, Lehman, Pennsylvania 18627 and Department of Physics, Kansas State University, Manhattan, Kansas 66506
• OSTI ID: 6672504
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 29:6; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
AUGMENTATION
CATIONS
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
ELEMENTS
EQUILIBRIUM
HYDROGEN
HYDROGEN IONS
HYDROGEN IONS 1 PLUS
INSTABILITY
ION COLLISIONS
ION-ATOM COLLISIONS
IONIZATION
IONS
NONMETALS