Angular distribution of Xe 5s. -->. epsilonp photoelectrons: Direct evidence for anisotropic final-state interaction

Journal Article · Mon Oct 18 00:00:00 EDT 1976 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.37.1049· OSTI ID:7141234

Dehmer, J L; Dill, D

The angular distribution of Xe 5s..-->..epsilonp photoelectrons has been measured yielding an asymmetry parameter ..beta..=1.4 +- 0.1 at 304 A. This deviation from the intuitively expected result ..beta..=2 (for a pure cos/sup 2/theta distribution) for photoionization of an s subshell of a /sup 1/S/sub 0/ target is a direct manifestation of anisotropic interactions experienced by the electron during the ejection process. The combined effect of interchannel and spin-orbit coupling is proposed as the likely interaction mechanism. (AIP)

• Research Organization: Argonne National Laboratory, Argonne, Illinois 60439
• OSTI ID: 7141234
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 37:16; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ANGULAR DISTRIBUTION
ANISOTROPY
COUPLING
DISTRIBUTION
ELECTRON SPECTROSCOPY
ELEMENTS
FINAL-STATE INTERACTIONS
INTERACTIONS
INTERMEDIATE COUPLING
IONIZATION
L-S COUPLING
NONMETALS
PHOTOELECTRON SPECTROSCOPY
PHOTOIONIZATION
RARE GASES
SPECTROSCOPY
XENON