Calculation of ionization within the close-coupling formalism

Journal Article · Tue Oct 01 00:00:00 EDT 1996 · Physical Review A

DOI:https://doi.org/10.1103/PhysRevA.54.2991· OSTI ID:385682

Bray, I; Fursa, D V ^[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)

We present a method for calculation of differential ionization cross sections from theories that use the close-coupling expansion for the total wave function. It is shown how, from a single such calculation, elastic, excitation, and ionization cross sections may be extracted using solely the {ital T}-matrix elements arising from solution of the coupled equations. To demonstrate the applicability of this formalism, the convergent close-coupling theory is systematically applied at incident energies of 150{endash}600 eV to the calculation of {ital e}-He ionization. Comparison with available measurements is generally very good. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 385682
• Journal Information: Physical Review A, Journal Name: Physical Review A Journal Issue: 4 Vol. 54; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CLOSE COUPLING APPROXIMATION
CROSS SECTIONS
ELECTRON-ATOM COLLISIONS
EV RANGE 100-1000
HELIUM
IONIZATION