Experimental determination of orbital and spin orientation of (Ar{sup +}){asterisk} formed in collisions

Journal Article · Fri Nov 01 04:00:00 EST 1996 · Physical Review A

DOI:https://doi.org/10.1103/PhysRevA.54.4119· OSTI ID:388282

Moudry, B W; Yenen, O; Jaecks, D H ^[1]; Macek, J H ^[2]

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1. Behlen Laboratory of Physics, University of Nebraska, Lincoln, Nebraska 68588-0111 (United States)
2. Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996-1501 (United States)

We have experimentally obtained the state multipoles up to rank two for {ital J}-resolved {sup 2}{ital F}{sub 7/2,5/2} states of Ar{sup +} for the two-electron process He{sup +}+Ar{r_arrow}He(1{ital s}{sup 2})+Ar{sup +}(3{ital p}{sup 4}[{sup 1}{ital D}]4{ital p}{sup 2}{ital F}{sup {ital o}}{sub 7/2,5/2}) by measuring the Stokes parameters of the fluorescence light from (Ar{sup +}){asterisk} in coincidence with the scattered He. By expanding the state multipoles of each {ital J} state in terms of total orbital and total spin multipole moments, we have determined the contributions to the experimentally determined state multipoles of each {ital J} state due to total orbital and total spin angular momenta. When the process is spin dependent, it is possible to extract magnetic octupole moments of the excited state due to the orbital charge circulation. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 388282
• Journal Information: Physical Review A, Journal Name: Physical Review A Journal Issue: 5 Vol. 54; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

1-NITROSO-2-NAPHTHOL
66 PHYSICS
ANGULAR MOMENTUM
ARGON
ARGON IONS
EXCITED STATES
FLUORESCENCE
HELIUM IONS
ION-ATOM COLLISIONS
MULTIPOLES
STOKES PARAMETERS