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Title: Collapse of the 4f orbital for Xe-like ions

Abstract

The effect of 4f orbital collapse on the spectra of Xe-like ions in the region of 4d..-->..nf,epsilonf excitations is studied with the use of a term-dependent Hartree-Fock technique. We find that the collapse of the 4f orbital is strongly term dependent, and that the appearance of intense absorption lines in the observed Ba/sup 2 +/ spectrum is due to the partial collapse of the 4f orbital in the 4d..-->..f/sup 1/P channel. We also show that after the 4f orbital is completely collapsed for high degrees of ionization along the isoelectronic sequence, the bulk of absorption oscillator strengths is concentrated at the 4d/sup 9/4f /sup 1/P level so that the only strong line in the spectrum is again the 4d..-->..4f /sup 1/P transition.

Authors:
;
Publication Date:
Research Org.:
Argonne National Laboratory, Argonne, Illinois 60439
OSTI Identifier:
5267753
DOE Contract Number:  
W-31-109-ENG-38
Resource Type:
Journal Article
Journal Name:
Phys. Rev. A; (United States)
Additional Journal Information:
Journal Volume: 28:5
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ATOMIC IONS; ABSORPTION SPECTRA; OSCILLATOR STRENGTHS; ELECTRONIC STRUCTURE; HARTREE-FOCK METHOD; INNER-SHELL IONIZATION; ISOELECTRONIC ATOMS; MULTICHARGED IONS; P STATES; WAVE FUNCTIONS; XENON; ATOMS; CHARGED PARTICLES; ELEMENTS; ENERGY LEVELS; FLUIDS; FUNCTIONS; GASES; IONIZATION; IONS; NONMETALS; RARE GASES; SPECTRA; 640305* - Atomic, Molecular & Chemical Physics- Atomic & Molecular Theory- (-1987)

Citation Formats

Cheng, K T, and Fischer, C F. Collapse of the 4f orbital for Xe-like ions. United States: N. p., 1983. Web. doi:10.1103/PhysRevA.28.2811.
Cheng, K T, & Fischer, C F. Collapse of the 4f orbital for Xe-like ions. United States. doi:10.1103/PhysRevA.28.2811.
Cheng, K T, and Fischer, C F. Tue . "Collapse of the 4f orbital for Xe-like ions". United States. doi:10.1103/PhysRevA.28.2811.
@article{osti_5267753,
title = {Collapse of the 4f orbital for Xe-like ions},
author = {Cheng, K T and Fischer, C F},
abstractNote = {The effect of 4f orbital collapse on the spectra of Xe-like ions in the region of 4d..-->..nf,epsilonf excitations is studied with the use of a term-dependent Hartree-Fock technique. We find that the collapse of the 4f orbital is strongly term dependent, and that the appearance of intense absorption lines in the observed Ba/sup 2 +/ spectrum is due to the partial collapse of the 4f orbital in the 4d..-->..f/sup 1/P channel. We also show that after the 4f orbital is completely collapsed for high degrees of ionization along the isoelectronic sequence, the bulk of absorption oscillator strengths is concentrated at the 4d/sup 9/4f /sup 1/P level so that the only strong line in the spectrum is again the 4d..-->..4f /sup 1/P transition.},
doi = {10.1103/PhysRevA.28.2811},
journal = {Phys. Rev. A; (United States)},
number = ,
volume = 28:5,
place = {United States},
year = {1983},
month = {11}
}