Relativistic coupled-channel calculations including pseudostates

Journal Article · Sat Jul 01 04:00:00 EDT 1989 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.40.125· OSTI ID:5898258

Toshima, N; Eichler, J

The previously developed relativistic, two-center, coupled-channeltreatment of atomic collisions between high-/ital Z/ ions has been extended toinclude pseudostates. By augmenting the atomic basis sets by pseudostates, anapproximate representation of the continuum is obtained as well as an improveddescription of quasimolecular states near the united-atom limit. The problemsarising from approximate basis states, specifically in relativistic collisions,are discussed. Numerical calculations forU/sup 92 +/+U/sup 91 +/ at 500 MeV/u are performed withbasis sets of up to 36 real and 16 continuum pseudostates. While the presentlyattainable basis sets are presumably still too small, one can get,nevertheless, reasonable estimates of the cross sections for ionization and/ital K/-vacancy production.

• Research Organization: Institute of Applied Physics, University of Tsukuba, Tsukuba, Ibaraki 305, Japan(DE); Bereich Kern- und Strahlenphysik, Hahn-Meitner-Institut Berlin, D-1000 Berlin 39, Federal Republic of Germany
• OSTI ID: 5898258
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 40:1; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
CHARGED PARTICLES
COLLISIONS
COUPLED CHANNEL THEORY
CROSS SECTIONS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
ELECTRONIC STRUCTURE
ENERGY LEVELS
ENERGY RANGE
GEV RANGE
GEV RANGE 10-100
INNER-SHELL IONIZATION
ION COLLISIONS
ION-ION COLLISIONS
IONIZATION
IONS
K SHELL
MULTICHARGED IONS
POINT DEFECTS
RELATIVISTIC RANGE
URANIUM IONS
VACANCIES
VIRTUAL STATES