Ionization of molecular hydrogen by proton impact. II. Two-electron processes

Journal Article · Wed Jul 01 04:00:00 EDT 1992 · Physical Review A. General Physics; (United States)

DOI:https://doi.org/10.1103/PhysRevA.46.290· OSTI ID:7034867

Nagy, L; Vegh, L ^[1]

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1. Institute of Nuclear Research of the Hungarian Academy of Sciences, Debrecen, P.O. Box 51, H-4001 (Hungary)

Cross sections for double ionization and ionization plus excitation of H{sub 2} by high-energy protons are calculated as a function of the orientation of the H{sub 2} internuclear axis. Only the contributions of the double-collision process have been included. The ground state of H{sub 2} is described by Heitler-London-type wave functions, and the molecular orbitals for the excited states of H{sub 2}{sup +} are constructed from atomic functions. The results have been compared with the data of Edwards {ital et} {ital al}. (Phys. Rev. A 42, 1367 (1990); 44, 797 (1991); Nucl. Instrum. Methods Phys. Res. B 53, 472 (1991)) and Ezell {ital et} {ital al}. (Nucl. Instrum. Methods Phys. Res. B 56/57, 292 (1991)). The theoretical and measured cross sections have the same magnitude for double ionization. For the excitation of the 2{ital p}{sigma}{sub {ital u}}, 2{ital p}{pi}{sub {ital u}}, and 2{ital s}{sigma}{sub {ital g}} states, the calculated cross sections are much lower than the measured ones.

• OSTI ID: 7034867
• Journal Information: Physical Review A. General Physics; (United States), Journal Name: Physical Review A. General Physics; (United States) Vol. 46:1; ISSN 1050-2947; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

664300* -- Atomic & Molecular Physics-- Collision Phenomena-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
CATIONS
CHARGED PARTICLES
COLLISIONS
CORRELATIONS
CROSS SECTIONS
ELEMENTS
HYDROGEN
HYDROGEN IONS
HYDROGEN IONS 1 PLUS
ION COLLISIONS
ION-MOLECULE COLLISIONS
IONIZATION
IONS
MANY-BODY PROBLEM
MOLECULE COLLISIONS
NONMETALS
TWO-BODY PROBLEM