Theoretical triple differential cross section of the helium atom ionization with excitation to the [ital n]=2 ion state

Journal Article · Thu Dec 01 00:00:00 EST 1994 · Physical Review A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.50.4700· OSTI ID:7094946

Kheifets, A S; Bray, I; McCarthy, I E; Shang, B ^[1]

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1. Electronic Structure of Materials Centre, The Flinders University of South Australia, G.P.O. Box 2100, Adelaide 5001 (Australia)

The ([ital e],2[ital e]) triple differential cross section and generalized oscillator strengths of the helium atom ionization with simultaneous excitation have been calculated for the kinematic arrangements of the recent measurements and calculations of Dupre [ital et] [ital al]. [J. Phys. B 25, 259 (1992)]. The first Born calculation has been performed with an initial correlated multiconfiguration Hartree-Fock helium atom ground state and a coupled-channel final state of the ion and ejected slow'' electron. We find generally good agreement with the experiment, which is a substantial improvement on the previous calculations.

• OSTI ID: 7094946
• Journal Information: Physical Review A; (United States), Vol. 50:6; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
HELIUM
OSCILLATOR STRENGTHS
ACCURACY
CORRELATIONS
COUPLED CHANNEL BORN APPROXIMATION
DIFFERENTIAL CROSS SECTIONS
ELECTRON EMISSION
ELECTRON-ATOM COLLISIONS
EXCITATION
GROUND STATES
HARTREE-FOCK METHOD
ION EMISSION
IONIZATION
ATOM COLLISIONS
BORN APPROXIMATION
CALCULATION METHODS
COLLISIONS
CROSS SECTIONS
ELECTRON COLLISIONS
ELEMENTS
EMISSION
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
FLUIDS
GASES
NONMETALS
RARE GASES
664300* - Atomic & Molecular Physics- Collision Phenomena- (1992-)