First experimental determinations and {ital R}-matrix calculations of the angular distribution of photoelectrons ejected in direct inner-shell photoionization of excited atoms

Journal Article · Mon Jul 03 04:00:00 EDT 1995 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.75.33· OSTI ID:76552

Rouvellou, B; Bizau, J; Cubaynes, D; Novak, J; Pahler, M; Journel, L; Wuilleumier, F J ^[1]; VoKy, L; Faucher, P ^[2]; Hibbert, A ^[3]; Berrah, N ^[4]

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1. Laboratoire de Spectroscopie Atomique et Ionique, Universite Paris Sud, Batiment 350, 91405 Orsay Cedex (France)
2. Observatoire Cote d`Azur, URA 1362-CNRS, BP 229, 06304 Nice Cedex 4 (France)
3. Queen`s University Belfast, Belfast, Northern Ireland, BT7 1NN (United Kingdom)
4. Physics Department, Western Michigan University, Kalamazoo, Michigan 49008 (United States)

Measurements of the angular distribution of 2{ital p} photoelectrons ejected from the 2{ital p}{sup 6}3{ital p}{sup 2}{ital P}{sub 3/2} state of excited sodium atoms have been performed over a broad photon energy range (50--140 eV) using synchrotron radiation. The outgoing photoelectrons were detected with a new multichannel system. The angular distribution of these electrons was also calculated in the {ital R}-matrix approximation. Our theoretical results for the partial photoionization cross sections and the angular distribution parameter are in excellent agreement with all experimental observations reported here and in earlier works.

• OSTI ID: 76552
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 1 Vol. 75; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ANGULAR DISTRIBUTION
ATOMS
ELECTRONS
EXCITED STATES
PHOTOIONIZATION
R MATRIX
SHELL MODELS
SYNCHROTRONS