Near-threshold resonance structure in the photoionisation cross section of Ca I
- 14 October 1982
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 15 (19) , L709-L713
- https://doi.org/10.1088/0022-3700/15/19/004
Abstract
The photoionisation cross section of Ca I has been calculated in the threshold region by many-body perturbation theory. Correlation effects among 3p64s2 electrons were found to be very important. Double-electron resonances dominate the cross section and were calculated using the interacting resonance formalism. Comparison is made with several experiments.Keywords
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