Ionization of hydrogen and hydrogenic ions by antiprotons

Journal Article · Wed May 01 04:00:00 EDT 1996 · Bulletin of the American Physical Society

DOI:https://doi.org/10.1103/PhysRevLett.76.2882· OSTI ID:394191

Schultz, D R; Krstic, P S; Reinhold, C O ^[1]; Wells, J C

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1. Oak Ridge National Lab., TN (United States)

Motivated by earlier theoretical studies which utilized simplified models and by a very recent experiment regarding antiproton-impact of hydrogen, the authors present a description of ionization of hydrogen and hydrogenic ions based on very large scale numerical solutions of the time-dependent Schroedinger equation in three spatial dimensions and on analysis of the topology of the electronic eigenenergy surfaces in the plane of complex internuclear distance. It is illustrated how ionization of atomic hydrogen and hydrogenic ions by antiprotons is quite different from that for impact by positively charged particles at low energies. Most significantly, for hydrogen targets, the quasi-molecular electronic eigenenergies approach close to and ultimately merge with the continuum at small distances, leading to a plateau of the low energy ionization cross section.

• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 394191
• Report Number(s): CONF-9605105--
• Journal Information: Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 3 Vol. 41; ISSN 0003-0503; ISSN BAPSA6
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ANTIPROTONS
HYDROGEN
ION-ATOM COLLISIONS
ION-ION COLLISIONS
IONIZATION
ISOELECTRONIC ATOMS