Observation of the angle-resolved resonant Auger emission from the [1s2p]({sup 3,1}P)3p{sup 2} {sup 1}P doubly excited 2p-2h states of Ne
Journal Article
·
· Physical Review. A
- SPring-8/RIKEN, 1-1-1 Kouto, Mikazuki, Sayo, Hyogo 679-5148 (Japan)
- SPring-8/JASRI, 1-1-1 Kouto, Mikazuki, Sayo, Hyogo 679-5198 (Japan)
- Institute of Applied Physics, University of Tsukuba, Tsukuba, Ibaraki 305-8573 (Japan)
- RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan)
- School of Medicine, Kitasato University, 1-15-1 Kitasato, Sagamihra, Kanagawa 228-855 (Japan)
A high-resolution photoabsorption spectrum of Ne has been measured in the energy range of the [1s2p]nln{sup '}l{sup '} doubly excited states, where square brackets indicate hole states, by means of photoion yield spectroscopy. The observed features have been interpreted by adopting a simple Rydberg formula. Energies as well as quantum defects for the members of the [1s2p]({sup 3,1}P)3pnp (3{<=}n{<=}5) series have been determined. We report observations of angle-resolved spectra of the resonant Auger (RA) transitions to the Ne{sup +} [2p{sup 3}]3p{sup 2} states and to the Ne{sup +} [2s2p{sup 2}]3p{sup 2} states from the [1s2p]({sup 3,1}P)3p{sup 2} doubly excited states. These double-spectator-type transitions are confirmed by a good general agreement between the measured and theoretical RA spectra, where theoretical spectra are calculated based on the Hartree-Fock approximation. The measured anisotropy parameters are compared with theoretical predictions calculated using a pure LS coupling approach. We have made assignments for several levels with the aid of theoretical calculations.
- OSTI ID:
- 20645900
- Journal Information:
- Physical Review. A, Journal Name: Physical Review. A Journal Issue: 2 Vol. 70; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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