Orbital collapse and the photoionization of the inner 4d shells for Xe-like ions

Journal Article · Tue Nov 01 04:00:00 EST 1983 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.28.2820· OSTI ID:5375907

Cheng, K T; Johnson, W R

Photoionization of the inner 4d shells for Xe, Cs/sup +/, Ba/sup 2 +/, and La/sup 3 +/ are studied with the use of the relativistic random-phase approximation. Total cross sections, partial cross-section branching ratios, and angular-distribution asymmetry parameters are calculated, and their systematic trends along the isoelectronic sequence are studied. Important dynamic effects of electron correlations are obtained from an eigenchannel analysis involving the eigenquantum defects, the eigendipole amplitudes, and the transformation U matrices. We find that there are shape resonances in the effective potential for f electrons, and that the collapse of the 4f orbital along the isoelectronic sequence is closely related to changes in f orbitals in passing through these resonances.

• Research Organization: Argonne National Laboratory, Argonne, Illinois 60439
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5375907
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 28:5; 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
ANGULAR DISTRIBUTION
ATOMS
BARIUM IONS
BRANCHING RATIO
CESIUM IONS
CHARGED PARTICLES
CROSS SECTIONS
DISTRIBUTION
ELECTRONIC STRUCTURE
ELEMENTS
ENERGY RANGE
ENERGY SPECTRA
FLUIDS
GASES
INNER-SHELL IONIZATION
IONIZATION
IONS
ISOELECTRONIC ATOMS
LANTHANUM IONS
MULTICHARGED IONS
NONMETALS
PHOTOIONIZATION
RANDOM PHASE APPROXIMATION
RARE GASES
RELATIVISTIC RANGE
RESONANCE
SPECTRA
TOTAL CROSS SECTIONS
XENON