Configuration interaction effects in the atomic photoelectron spectra of Ba, Sm, Eu, and Yb

Journal Article · Tue Mar 15 04:00:00 EST 1977 · J. Chem. Phys.; (United States)

DOI:https://doi.org/10.1063/1.434245· OSTI ID:7312286

Lee, S; Suezer, S; Matthias, E; Rosenberg, R A; Shirley, D A

High-temperature photoelectron spectra of Ba, Sm, Eu, and Yb were studied using both He I and Ne I resonance lines. In addition to strong lines corresponding to transitions from the primary configurations, correlation satellites were observed in every spectrum. By comparing the spectra excited at different photon energies, the satellite lines found in all Ne I spectra and the He I spectrum of Yb were attributed to admixtures of the configurations 5d/sup 2/, 6p;, etc., into the ground state. Autoionization is believed to occur at the energies of the He I..cap alpha.., He I..beta.., and Ne I satellite lines for Ba; at the He I..cap alpha.. energy for Sm; and at the He I..cap alpha.. and He I..beta.. energies for Eu. Autoionization was detected by noting the dramatic increase in satellite intensities and, in some instances, the large deviation of the observed intensity ratios within multiplets from the statistical values. Photoelectron spectroscopy has been demonstrated to have great potential in providing detailed information about electron correlation in both initial and final states.

• Research Organization: Materials and Molecular Reseach Division, Lawrence Berkeley Laboratory, and Department of Chemistry, University of California, Berkeley, California 94720
• OSTI ID: 7312286
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 66:6; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ALKALINE EARTH METALS
AUTOIONIZATION
BARIUM
CONFIGURATION INTERACTION
CORRELATIONS
ELECTRON CORRELATION
ELECTRON SPECTRA
ELECTRON SPECTROSCOPY
ELEMENTS
EMISSION
ENERGY DEPENDENCE
EUROPIUM
HIGH TEMPERATURE
IONIZATION
METALS
PHOTOELECTRON SPECTROSCOPY
PHOTOEMISSION
PHOTOIONIZATION
RARE EARTHS
SAMARIUM
SECONDARY EMISSION
SPECTRA
SPECTROSCOPY
YTTERBIUM