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Wavelength dependence of the photoelectron angular distributions of the rare gases

Journal Article · · Physical Review. A
 [1];  [2];  [3];  [3]
  1. Argonne National Lab., IL (United States)
  2. Yale University, New Haven, CT (United States), Dept. of Chemistry
  3. Wavelength dependence of the photoelectron angular distributions of the rare gases
+ Show Author Affiliations

Photoelectron angular distributions for the valence p shells of the rare gases have been measured up to a photon energy of 40.8 eV (48.4 eV for Ne) using resonance radiation from a hollow-cathode discharge lamp. This work extends the range of existing absolute measurements on Ne, Kr, and Xe. Comparison with Hartree-Fock and RPAE (random-phase approximation with exchange) calculations indicates excellent agreement for Ne. However, the present results, particularly for Xe, add to earlier evidence that data for Ar, Kr, and Xe show systematic deviations from theory, especially at the higher photoelectron kinetic energies. For Kr and Xe, we report asymmetry parameters separately for processes leading to the 2P3/2,1/2 spin-orbit states of the residual ion. The Xe results indicate that β3/2 -- β1/2 is positive for λ ≥ 461 Å, but changes sign in the range λ ~ 350--400 Å. At 304 Å, β3/2 - β1/2 = -0.30, which agrees with a recent calculation based on the Dirac-Slater model. (AIP)

Research Organization:
Argonne National Laboratory, Argonne, IL (United States)
Sponsoring Organization:
US Energy Research and Development Administration (ERDA)
DOE Contract Number:
W-31109-ENG-38
NSA Number:
NSA-33-010267
OSTI ID:
4146922
Journal Information:
Physical Review. A, Journal Name: Physical Review. A Journal Issue: 5 Vol. 12; ISSN 1050-2947; ISSN PLRAA
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English

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Related Subjects

*ARGON-- PHOTOELECTRON SPECTROSCOPY
*HELIUM-- PHOTOELECTRON SPECTROSCOPY
*KRYPTON-- PHOTOELECTRON SPECTROSCOPY
*NEON-- PHOTOELECTRON SPECTROSCOPY
*XENON-- PHOTOELECTRON SPECTROSCOPY
74 ATOMIC AND MOLECULAR PHYSICS
ANGULAR DISTRIBUTION
HARTREE- FOCK METHOD
L-S COUPLING
RARE GASES