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Phys. Rev. Lett. 87, 253002 (2001) [4 pages]

K-Shell Photodetachment of Li-: Experiment and Theory

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N. Berrah1, J. D. Bozek2, A. A. Wills1, G. Turri1,2, H.-L. Zhou3, S. T. Manson3, G. Akerman2, B. Rude2, N. D. Gibson4, C. W. Walter4, L. VoKy5, A. Hibbert6, and S. M. Ferguson1
1Western Michigan University, Physics Department, Kalamazoo, Michigan 49008
2Lawrence Berkeley National Laboratory, Advanced Light Source, Berkeley, California 94720
3Department of Physics and Astronomy, Georgia State University, Atlanta, Georgia 30309
4Department of Physics and Astronomy, Denison University, Granville, Ohio 43023
5DAMAP, UMR 8588 du CNRS, Observatoire de Paris 92195, Meudon Cedex, France
6Queen's University of Belfast, Belfast, BT7 1NN, United Kingdom

Received 2 May 2001; published 3 December 2001

An experimental K-shell photodetachment study of Li- giving rise to doubly photoionized Li+ ions has been carried out at the Advanced Light Source, using a collinear photon-ion beam apparatus. The experiment reveals dramatic structure, differing substantially both qualitatively and quantitatively from the corresponding processes above the 1s ionization threshold in Li and Li+, as predicted by our enhanced R-matrix calculation. The experimental/theoretical comparison shows good agreement over some of the photon energy range, and also reveals some puzzling discrepancies.

© 2001 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.87.253002
DOI:
10.1103/PhysRevLett.87.253002
PACS:
32.80.Fb, 31.25.Eb
 
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