Photoionization cross section for He in the hyperspherical coordinate method

Authors

Donald L. Miller, University of Nebraska - Lincoln
Anthony F. Starace, University of Nebraska-LincolnFollow

Document Type

Article

Date of this Version

September 1980

Comments

Published in Journal of Physics B: Atomic and Molecular Physics 13:17 (September 14, 1980), pp. L525-L529. Copyright © 1980 Institute of Physics Publishing. Used by permission. http://www.iop.org/EJ/journal/JPhysB

Abstract

The hyperspherical coordinate method developed by Macek, Fano, Lin, and Klar to describe two-electron correlations is used for the first time to treat an atomic photoionization process. Using adiabatic approximations for both the initial and the final state, the cross section for the process He +γ +He⁺1s +e^– is calculated and is found to lie 1% higher than the revised experimental data of Samson at threshold, 4% lower at 1 Ryd above threshold, and 12% lower at 1.9 Ryd above threshold.