Investigation of spin-orbit effects in the excitation of noble gases by spin-polarized electrons

Journal Article · Sat May 01 04:00:00 EDT 1993 · Physical Review A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.47.3775· OSTI ID:6642662

Furst, J E; Wijayaratna, W M.K.P.; Madison, D H; Gay, T J ^[1]

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1. Laboratory for Atomic and Molecular Research and Department of Physics, University of Missouri-Rolla, Rolla, Missouri 65401 (United States)

We have measured the integrated Stokes parameters of the light emitted following the impact excitation by polarized electrons of the [ital np][sup 5] ([ital n]+1)[ital p][5/2][sub 3] states in Ne ([ital n]=2), Ar ([ital n]=3), Kr ([ital n]=4), Xe ([ital n]=5), and the [ital np][sup 5] ([ital n]+1)[ital p][5/2][sub 2] state in Kr. The near-threshold linear-polarization fractions [eta][sub 1] were consistent with zero for all of the [ital J]=3 states measured, providing no evidence of Mott scattering. For [ital J]=2 excitation, [eta][sub 1] shows the clear influence of the intermediately coupled nature of the state. At threshold, the measured circular polarization [eta][sub 2] and linear polarization [eta][sub 3] for the [ital J]=3 states agree well with the [ital LS]-coupled threshold predictions. These results provide the basis for optical measurements of electron polarization.

• OSTI ID: 6642662
• Journal Information: Physical Review A; (United States), Journal Name: Physical Review A; (United States) Vol. 47:5; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

664300* -- Atomic & Molecular Physics-- Collision Phenomena-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
ARGON
ATOM COLLISIONS
COLLISIONS
ELASTIC SCATTERING
ELECTRON COLLISIONS
ELECTRON-ATOM COLLISIONS
ELEMENTS
EMISSION
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITATION
FLUIDS
GASES
KRYPTON
MOTT SCATTERING
NEON
NONMETALS
ORIENTATION
P STATES
PHOTON EMISSION
RARE GASES
SCATTERING
SPIN ORIENTATION
STOKES PARAMETERS
XENON