Absolute triply differential (e, 2e) cross sections for He in the intermediate energy region with comparison to theory

J. Röder, Fachbereich Physik, Universität Kaiserslautern, D-67663 Kaiserslautern, Germany
H. Ehrhardt, Fachbereich Physik, Universität Kaiserslautern, D-67663 Kaiserslautern, Germany
Cheng Pan, University of Nebraska - Lincoln
Anthony F. Starace, University of Nebraska-Lincoln
Igor Bray, Electronic Structure of Materials Centre, The Flinders University of South Australia, GPO Box 2100, Adelaide 5001, Australia
Dmitry V. Fursa, Electronic Structure of Materials Centre, The Flinders University of South Australia, GPO Box 2100, Adelaide 5001, Australia

Document Type Article

Published in Journal of Physics B: Atomic, Molecular and Optical Physics 31:11 (June 14, 1998) pp. L525–L531. Copyright © 1998 IOP Publishing Ltd. Used by permission. http://www.iop.org/EJ/journal/JPhysB

Abstract

Absolute triply differential (e, 2e) cross section measurements are presented for He at incident energies E₀ = 32.6, 44.6, 64.6, and 104.6 eV with equal energy sharing and the θ₁₂ = π configuration. Results of distorted partial-wave calculations agree with the measurements; those of convergent close-coupling calculations agree with the relative angular distributions, and with absolute values after rescaling by consideration of the singly differential cross section.