Nondipole effects in the photoionization of neon: Random-phase approximation
- Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556 (United States)
- Lawrence Livermore National Laboratory, University of California, Livermore, California 94550 (United States)
- Department of Physics and Astronomy, Georgia State University, Atlanta, Georgia 30303 (United States)
The random-phase approximation (RPA) is applied to study nondipole corrections to the angular distribution of photoelectrons from the n=2 shell of Ne. Calculations of the parameters {gamma}{sub nl} and {delta}{sub nl} arising from E{sub 1}-E{sub 2} interference effects are carried out for the 2s and 2p subshells of Ne in the photon energy range 100{endash}2000 eV. For the 2s shell, the RPA calculations show small effects of correlation near the 2s threshold energy, but are otherwise in agreement with independent-particle approximation (IPA) calculations. The RPA and IPA values of {gamma}{sub 2s} are also in agreement with experiment. For the 2p shell, a small difference between RPA and IPA calculations of the nondipole parameters is found for energies near the 1s threshold; however, both RPA and IPA calculations of the parameter {gamma}{sub 2p}+3{delta}{sub 2p} disagree significantly with experimental measurements for photon energies above 1000 eV. thinsp {copyright} {ital 1999} {ital The American Physical Society}
- OSTI ID:
- 337531
- Journal Information:
- Physical Review A, Journal Name: Physical Review A Journal Issue: 5 Vol. 59; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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