Angle-Resolved Photoelectron Spectrometry Studies of the Autoionization of the 2s{sup 2}2p {sup 2}P Triply Excited State of Atomic Lithium: Experimental Results and R -Matrix Calculations

Journal Article · Mon Feb 21 00:00:00 EST 2000 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.84.1677· OSTI ID:20215557

Diehl, S ^[1]; Cubaynes, D ^[1]; Zhou, H L ^[2]; VoKy, L ^[3]; Wuilleumier, F J ^[1]; Kennedy, E T ^[4]; Bizau, J M ^[1]; Manson, S T ^[2]; Morgan, T J ^[5]; Blancard, C ^[6]

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1. Laboratoire de Spectroscopie Atomique et Ionique, UMR 8624 du CNRS, Universite Paris-Sud, B. 350, 91405 Orsay, (France)
2. Department of Physics and Astronomy, Georgia State University, Atlanta, Georgia 30303 (United States)
3. Observatoire de la Cote d'Azur, BP 229, 06304 Nice, (France)
4. School of Physical Sciences, Dublin City University, Glasnevin, Dublin 9, (Ireland)
5. Wesleyan University, Department of Physics, Middletown, Connecticut 06459 (United States)
6. DPTA, Centre CEA-DAM, BP 12, 91680-Bruyeres-le-Chatel, (France)

We have measured the angle-resolved energy dependence of the electrons emitted over the energy range of the triply excited 2s{sup 2}2p P{sup 2} lithium resonance using synchrotron radiation. We have also calculated the behavior of the angular distribution parameter {beta} using the R -matrix approximation. Experimental and theoretical results are in good agreement and show deep minima in the 1s2p P{sup 1,} {sup 3} ionic channels. The energy at which the minima occur does not coincide with the resonance energy, but is shifted towards higher energy. (c) 2000 The American Physical Society.

• OSTI ID: 20215557
• Journal Information: Physical Review Letters, Vol. 84, Issue 8; Other Information: PBD: 21 Feb 2000; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
LITHIUM
PHOTOELECTRON SPECTROSCOPY
AUTOIONIZATION
SYNCHROTRON RADIATION
ANGULAR DISTRIBUTION
EXCITED STATES
R MATRIX
EXPERIMENTAL DATA
THEORETICAL DATA