Symmetrized Amplitudes of Helium-Atom Double Photoionization
Date
2002
Authors
Kheifets, Anatoli
Bray, Igor
Journal Title
Journal ISSN
Volume Title
Publisher
American Physical Society
Abstract
A series of convergent close-coupling (CCC) calculations of the symmetrized amplitudes of the helium atom double photoionization (DPI) were carried out at several fixed excess energies and varying energy ratios. Gaussian fits obtained directly from the theory were provided. Utility of the 4P Gaussian parametrization was illustrated in the case of 40 eV excess energy with E1=35 eV and E2=5 eV. The resulting data were analyzed in detail.
Description
Keywords
Keywords: Atoms; Helium; Impact ionization; Matrix algebra; Numerical methods; Double photoionization; Gaussian ansatz; Ionization amplitude; Photoionization
Citation
Collections
Source
Physical Review A: Atomic, Molecular and Optical Physics
Type
Journal article