Identification and characterization of the dielectronic process in the formation of two K-shell vacancies in atomic Li by fast electron impact

Journal Article · Wed Oct 01 04:00:00 EDT 2003 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.68.040701· OSTI ID:20640270

Rangama, J; Hennecart, D; Fremont, F; Husson, X; Chesnel, J -Y ^[1]; Stolterfoht, N ^[2]; Tanis, J A ^[3]; Sulik, B ^[4]

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1. Centre Interdisciplinaire de Recherche Ions Lasers, Unite mixte CEA-CNRS-ENSICAEN, Universite de Caen Basse-Normandie, 6 Boulevard Marechal Juin, F-14050 Caen cedex 4 (France)
2. Hahn-Meitner Institut GmbH, Glienickerstrasse 100, D-14109 Berlin (Germany)
3. Western Michigan University, Kalamazoo, Michigan 49008 (United States)
4. Institute of Nuclear Research of the Hungarian Academy of Sciences, H-4001 Debrecen (Hungary)

Electron correlation effects in the production of two K-shell vacancies in lithium are investigated by bombarding atomic Li with 5-keV electrons. High-resolution Auger electron spectra show that discrete doubly vacant K-shell states are predominantly formed from ionization plus excitation, giving rise to the 2sns {sup 1,3}S and 2snp {sup 1,3}P states of Li{sup +}. For these fast electron projectiles, the shake-up and dielectronic manifestations of the electron-electron interaction are shown to be the only mechanisms for creating the observed hollow states. The formation of the 2snp {sup 1,3}P states is found to be mediated only by the dielectronic process, permitting this aspect of the electron-electron interaction to be separately identified and its contribution characterized.

• OSTI ID: 20640270
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 4 Vol. 68; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
AUGER ELECTRON SPECTROSCOPY
ELECTRON CORRELATION
ELECTRON-ATOM COLLISIONS
ELECTRON-ELECTRON COLLISIONS
ELECTRON-ELECTRON COUPLING
ELECTRONS
EXCITATION
IONIZATION
K SHELL
KEV RANGE
LITHIUM
LITHIUM IONS
RESOLUTION
VACANCIES