Measuring nondipolar asymmetries of photoelectron angular distributions

Journal Article · Thu Aug 01 04:00:00 EDT 1996 · Physical Review A

DOI:https://doi.org/10.1103/PhysRevA.54.1463· OSTI ID:286626

Shaw, P S ^[1]; Arp, U ^[2]; Southworth, S H ^[3]

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1. Optical Technology Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899 (United States)
2. Quantum Metrology Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899 (United States)
3. 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

Related Subjects

66 PHYSICS
ANGULAR DISTRIBUTION
ASYMMETRY
KEV RANGE 01-10
MEASURING METHODS
PHOTOELECTRON SPECTROSCOPY
PHOTOIONIZATION
PHOTON BEAMS
PHOTON-ATOM COLLISIONS
SOFT X RADIATION