Observation of angular correlation between subsequently emitted Auger electrons

Journal Article · Fri Jan 01 04:00:00 EST 1999 · Physical Review A

DOI:https://doi.org/10.1103/PhysRevA.59.421· OSTI ID:289204

Wehlitz, R; Pibida, L S; Levin, J C; Sellin, I A ^[1]

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1. Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996-1200 (United States)

In an exploratory feasibility study we have measured the angular correlation between Auger electrons that were emitted in a cascadelike decay process after resonant photoexcitation, using synchrotron radiation from the Brookhaven National Synchrotron Light Source. While the monochromator was tuned to the argon 1s{r_arrow}4p resonance (3203.5 eV) we recorded Ar LMM Auger electrons in coincidence with KL{sub 2,3}L{sub 2,3},KL{sub 1}L{sub 2,3}, and KL{sub 2,3}M{sub 1,2,3} Auger electrons. We found different nonisotropic angular correlations between distinct energy regions of the LMM group of Auger lines and the KL{sub 2,3}L{sub 2,3} Auger electrons, while for other kinetic energies the LMM Auger electrons exhibit isotropy. Because the KLL and LMM Auger energies are so different, we believe that the nonisotropic angular correlation observed is due to an alignment effect rather than a dynamical postcollision interaction effect. {copyright} {ital 1999} {ital The American Physical Society}

• OSTI ID: 289204
• Journal Information: Physical Review A, Journal Name: Physical Review A Journal Issue: 1 Vol. 59; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ALIGNMENT
ANGULAR CORRELATION
ARGON
AUGER EFFECT
AUGER ELECTRON SPECTROSCOPY
EXCITATION
K SHELL
L SHELL
M SHELL
P STATES
PHOTON-ATOM COLLISIONS
RESONANCE
S STATES
SYNCHROTRON RADIATION
SYNCHROTRON RADIATION SOURCES