Two-photon detachment cross sections and dynamic polarizability of H^- using a variationally stable, coupled-channel hyperspherical approach

Authors

Mauro Masili, University of Nebraska - Lincoln
Anthony F. Starace, University of Nebraska-LincolnFollow

Date of this Version

September 2000

Comments

Published by American Physical Society. Phys. Rev. A 62, 033403 (2000). http://pra.aps.org. Copyright © 2000 American Physical Society. Permission to use.

Abstract

We present a generalization of the variationally stable method of Gao and Starace [B. Gao and A. F. Starace, Phys. Rev. Lett. 61, 404 (1988); Phys. Rev. A 39, 4550 (1989)] for two-electron atoms and ions that incorporates a coupled-channel adiabatic hyperspherical approach. Using this approach, we report results for two-photon detachment of H^-, in which we have coupled one, two, three, and four adiabatic hyperspherical channels within each term level of the initial, intermediate, and final states. We present results also for the dynamic polarizability of H^- as well as for the one-photon detachment cross section. Comparisons are given with results of prior work.