Measuring nondipolar asymmetries of photoelectron angular distributions
- Optical Technology Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899 (United States)
- Quantum Metrology Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899 (United States)
- Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
In theories of photoelectron angular distributions at soft-x-ray energies from 1 to 10 keV, first-order corrections to the dipole approximation give rise to two nondipolar asymmetry parameters in addition to the well-known dipolar asymmetry parameter {beta}. The nondipolar parameters characterize the forward-backward asymmetry with respect to the propagation vector of the photon beam. Experimentally, the measurement of the nondipolar effect has been hampered because of the complications resulting from the three-parameter angular distribution. In this paper, we suggest various experimental approaches to the measurement of the three asymmetry parameters using partially linearly polarized x rays, corresponding to measurements on synchrotron radiation beamlines. We describe methods to extract the asymmetry parameters using such approaches. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 286626
- Journal Information:
- Physical Review A, Journal Name: Physical Review A Journal Issue: 2 Vol. 54; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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