Orbital-collapse effects in photoemission from atomic Eu

Journal Article · Wed Oct 01 04:00:00 EDT 1986 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.34.2858· OSTI ID:5240433

Becker, U; Kerkhoff, H G; Lindle, D W; Kobrin, P H; Ferrett, T A; Heimann, P A; Truesdale, C M; Shirley, D A

Resonant photoelectron spectra of atomic Eu have been measured in the photon-energy ranges of the ''4d..-->..4f '' (110-170 eV) and 3d..-->..4f (1120-1165 eV) excitations. For the ''4d..-->..4f '' giant resonance, the decay process results mostly in Eu/sup +/ main-line configurations, including some fractional enhancement directly into the 4d continuum. The 3d..-->..4f excitations, however, are characterized by competition between the main-line decay channels and channels corresponding to highly excited (satellite) ionic states. We find that decay after 4d excitation leads predominantly to the 4f continuum, whereas several channels participate in the decay following 3d excitation. The observed decay characteristics are discussed with regard to orbital-collapse phenomena.

• Research Organization: Institut fuer Strahlungs- und Kernphysik, Technische Universitaet Berlin, D-1000 Berlin 12, West Germany
• OSTI ID: 5240433
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 34:4; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
BREMSSTRAHLUNG
ELECTROMAGNETIC RADIATION
ELECTRON SPECTRA
ELECTRON SPECTROSCOPY
ELECTRONIC STRUCTURE
ELEMENTS
EMISSION
EUROPIUM
GIANT RESONANCE
INNER-SHELL IONIZATION
IONIZATION
METALS
MULTILEVEL ANALYSIS
PHOTOELECTRON SPECTROSCOPY
PHOTOEMISSION
RADIATIONS
RARE EARTHS
RESONANCE
SECONDARY EMISSION
SPECTRA
SPECTROSCOPY
SYNCHROTRON RADIATION