APS » PROLA » Phys. Rev. Lett. » Volume 84 » Issue 8

Phys. Rev. Lett. 84, 1677 - 1680 (2000)

Angle-Resolved Photoelectron Spectrometry Studies of the Autoionization of the 2s22p 2P Triply Excited State of Atomic Lithium: Experimental Results and R-Matrix Calculations
Download: PDF (73 kB) or Buy this Article (Use Article Pack) Export: BibTeX or EndNote (RIS)

S. Diehl1 *, D. Cubaynes1, H. L. Zhou2, L. VoKy3, F. J. Wuilleumier1, E. T. Kennedy4, J. M. Bizau1, S. T. Manson2, T. J. Morgan5, C. Blancard6, N. Berrah7, and J. Bozek8
1Laboratoire de Spectroscopie Atomique et Ionique, UMR 8624 du CNRS, Université Paris-Sud, B. 350, 91405 Orsay, France
2Department of Physics and Astronomy, Georgia State University, Atlanta, Georgia 30303
3Observatoire de la Côte d'Azur, BP 229, 06304 Nice, France
4School of Physical Sciences, Dublin City University, Glasnevin, Dublin 9, Ireland
5Wesleyan University, Department of Physics, Middletown, Connecticut 06459
6DPTA, Centre CEA-DAM, BP 12, 91680-Bruyères-le-Châtel, France
7Department of Physics, Western Michigan University, Kalamazoo, Michigan 40849
8Advanced Light Source, Ernest Orlando Lawrence Berkeley Laboratory, University of California, 1 Cyclotron Road, Berkeley, California 97420

Received 2 July 1999

We have measured the angle-resolved energy dependence of the electrons emitted over the energy range of the triply excited 2s22p 2P lithium resonance using synchrotron radiation. We have also calculated the behavior of the angular distribution parameter β using the R-matrix approximation. Experimental and theoretical results are in good agreement and show deep minima in the 1s2p 1, 3P ionic channels. The energy at which the minima occur does not coincide with the resonance energy, but is shifted towards higher energy.


©2000 The American Physical Society

URL: http://link.aps.org/abstract/PRL/v84/p1677
DOI: 10.1103/PhysRevLett.84.1677
PACS: 32.80.Hd, 32.80.Fb

* Present address: Laboratoire DIAM, Université Paris VI, place Jussieu, 75231 Paris.

[ Abstract  |  Previous article  |  Next article  |  Issue 8 ]