Threshold measurements of the K-shell photoelectron satellites in Ne and Ar
The relative intensities of K-shell photoelectron satellites near their respective thresholds in Ne and Ar have been measured using synchrotron radiation. The Ne satellites were found to be 25--40 % smaller than in the high-energy limit. The 2p..-->..3s ''conjugate shakeup'' state of Ne/sup +/ was not observed, in contrast to predictions of many-body perturbation theory. The asymmetry parameter of the neon Auger group was found to be equal to zero at the 1s..-->..3p resonance at 867 eV. This result may indicate that the 3p Rydberg electron is essentially decoupled from the core in the Auger decay process. In argon, a K-shell satellite was observed at 24.6(3) eV with 6% intensity relative to the main line, confirming a theoretical prediction by Dyall. Tentative evidence was obtained that this branching ratio increases with energy in the first 90 eV above threshold.
- Research Organization:
- Materials and Molecular Research Division, Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720 and Department of Chemistry, University of California, Berkeley, California 94720
- OSTI ID:
- 5200939
- Journal Information:
- Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 29:1; ISSN PLRAA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ARGON
BREMSSTRAHLUNG
ELECTROMAGNETIC RADIATION
ELECTRON SPECTROSCOPY
ELECTRONIC STRUCTURE
ELEMENTS
ENERGY
ENERGY LEVELS
FINE STRUCTURE
FLUIDS
GASES
IONIZATION
K SHELL
NEON
NONMETALS
PHOTOELECTRON SPECTROSCOPY
PHOTOIONIZATION
RADIATIONS
RARE GASES
SPECTROSCOPY
SYNCHROTRON RADIATION
THRESHOLD ENERGY