Angle-resolved study of Ar 2p{sub 1/2,3/2}{sup {minus}1}ns,d resonant Auger decay

Journal Article · Tue Jul 01 04:00:00 EDT 1997 · Physical Review A

DOI:https://doi.org/10.1103/PhysRevA.56.501· OSTI ID:664414

Farhat, A; Humphrey, M; Langer, B; Berrah, N ^[1]; Bozek, J D ^[2]; Cubaynes, D ^[3]

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1. Physics Department, Western Michigan University, Kalamazoo, Michigan 49008 (United States)
2. Lawrence Berkeley National Laboratory, Advanced Light Source, Mail Stop 2-400, Berkeley, California 94720 (United States)
3. Laboratoire de Spectroscopie Atomique et Ionique, URA 775, CNRS, Universite Paris Sud, 91405 Orsay (France)

Angle-resolved measurements of the Ar 2p{sub 1/2}{sup {minus}1}4s,3d,4d and 2p{sub 3/2}{sup {minus}1}4s,3d,4d resonant Auger transitions have been carried out using photons from an undulator beamline at the Advanced Light Source. The intensity distributions and angular distribution anisotropy ({beta}) parameters have been reported for nearly all of the possible 3p{sup 4}nl final ionic states. Our results further verify the predictions of the spectator model for the 2p{sub 1/2,3/2}{sup {minus}1}4s resonances and the subsequent breakdown of this model for the 2p{sub 1/2,3/2}{sup {minus}1}3d and 2p{sub 1/2,3/2}{sup {minus}1}4d relative intensities. No prior measurement of the resonant Auger {beta} parameters of the 2p{sub 1/2,3/2}{sup {minus}1}3d and 2p{sub 1/2,3/2}{sup {minus}1}4d resonances, and the intensity distribution for the 2p{sub 1/2}{sup {minus}1}4d resonance has been reported, to the best of our knowledge. Our results have been compared with previous experimental and theoretical results wherever possible. {copyright} {ital 1997} {ital The American Physical Society}

• DOE Contract Number: FG02-92ER14299
• OSTI ID: 664414
• Journal Information: Physical Review A, Journal Name: Physical Review A Journal Issue: 1 Vol. 56; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
AMPLITUDES
ANGULAR DISTRIBUTION
ARGON
AUGER EFFECT
DECAY
RESONANCE