First angle-resolved photoelectron measurements following inner-shell resonant excitation in a singly charged ion

Journal Article · Sat Jun 01 00:00:00 EDT 1996 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.76.4496· OSTI ID:288888

Al Moussalami, S; Bizau, J M; Rouvellou, B; Cubaynes, D; Journel, L; Wuilleumier, F J ^[1]; Obert, J; Putaux, J C ^[2]; Morgan, T J ^[3]; Richter, M ^[4]

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1. Laboratoire de Spectroscopie Atomique et Ionique and Laboratoire pour l`Utilisation du Rayonnement Electromagnetique, Batiment 350, Universite Paris-Sud, 91405 Orsay Cedex (France)
2. Institut de Physique Nucleaire, Batiment 100, Universite Paris-Sud, 91405 Orsay Cedex (France)
3. Wesleyan University, Middletown, Connecticut 06457 (United States)
4. Physikalisch-Technische Bundesanstalt, Abbestrasse 2-12, D-10587 Berlin (Germany)

We have measured the angular distribution of electrons emitted in the autoionization of the giant resonance 3{ital p}{sup 6}4{ital s}{sup 2}{ital S}{r_arrow}[{beta}{ital p}{sup 5}3{ital d}{sup 1}({ital P})4{ital s}]{sup 2}{ital P} in Ca{sup +} ions over the profile of the resonance. The absolute value of the asymmetry parameter we have determined at the top of the resonance is {beta}=1.89{plus_minus}0.13, suggesting that {ital LS} coupling remains a good approximation for the description of this ionic resonance. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 288888
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 24 Vol. 76; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ANGULAR DISTRIBUTION
ASYMMETRY
CALCIUM IONS
COUPLING
EXCITATION
GIANT RESONANCE
IONIZATION
KINETIC ENERGY
PHOTOELECTRON SPECTROSCOPY