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Title:
Electron- He+ P -wave elastic scattering and photoabsorption in two-electron systems
Authors:
Bhatia, A. K.
Affiliation:
NASA/Goddard Space Flight Center, Greenbelt, Maryland 20771, USA
Publication:
Physical Review A, vol. 73, Issue 1, id. 012705 (PhRvA Homepage)
Publication Date:
01/2006
Origin:
APS
Abstract Copyright:
(c) 2006: The American Physical Society
DOI:
10.1103/PhysRevA.73.012705
Bibliographic Code:
2006PhRvA..73a2705B

Abstract

In a previous paper [A. K. Bhatia, Phys. Rev. A 69, 032714 (2004)], electron-hydrogen P -wave scattering phase shifts were calculated using the optical potential approach based on the Feshbach projection operator formalism. This method is now extended to the singlet and triplet electron- He+ P -wave scattering in the elastic region. Phase shifts are calculated using Hylleraas-type correlation functions with up to 220 terms. Results are rigorous lower bounds to the exact phase shifts, and they are compared to phase shifts obtained from the method of polarized orbitals and close-coupling calculations. The continuum functions calculated here are used to calculate photoabsorption cross sections. Photoionization cross sections of He and photodetachment cross sections of H- are calculated in the elastic region—i.e., leaving He+ and H in their respective ground states—and compared with previous calculations. Radiative attachment rates are also calculated.
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