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Title: Electron impact excitation cross sections in F-like selenium

Abstract

Cross sections for excitation induced by electron collision between low-lying 1s{sup 2}2s{sup 2}2p{sup 5} and 1s{sup 2}2s2p{sup 6} states of f-like selenium and from these states to singly excited states with the excited electron occupying the M shell have been calculated by relativistic distorted-wave Born procedures. The GRASP{sup 2} code was used for the atomic structure calculations. The continuum orbitals for the construction of continuum states were computed in the distorted-wave approximation, in which the distorted-wave potential used was the spherically averaged potential of the nucleus plus the potential of the bound electrons of the bound state. The cross sections for excitations were computed first by a 233-level multiconfiguration Dirac-Fock (MCDF) configuration expansion and then by a 279-level MCDF configuration expansion. The latter procedure, which also took into account contributions from all the participating singly excited N-shell states, was found to be necessary for improved accuracy. The cross section data should be a useful reference in the development of x-ray lasers and other related fields involving highly stripped ions.

Authors:
 [1];  [1]
  1. National Univ. of Singapore (Singapore). Physics Dept.
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
305495
Resource Type:
Journal Article
Journal Name:
Atomic Data and Nuclear Data Tables
Additional Journal Information:
Journal Volume: 70; Journal Issue: 1; Other Information: PBD: Sep 1998
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; THEORETICAL DATA; ELECTRON-ION COLLISIONS; EXCITATION; DWBA; ELECTRONIC STRUCTURE; CROSS SECTIONS; OSCILLATOR STRENGTHS; SELENIUM IONS

Citation Formats

Guoxin, Chen, Inst. of Applied Physics and Computational Mathematics, Beijing, and Ong, P P. Electron impact excitation cross sections in F-like selenium. United States: N. p., 1998. Web. doi:10.1006/adnd.1998.0787.
Guoxin, Chen, Inst. of Applied Physics and Computational Mathematics, Beijing, & Ong, P P. Electron impact excitation cross sections in F-like selenium. United States. https://doi.org/10.1006/adnd.1998.0787
Guoxin, Chen, Inst. of Applied Physics and Computational Mathematics, Beijing, and Ong, P P. 1998. "Electron impact excitation cross sections in F-like selenium". United States. https://doi.org/10.1006/adnd.1998.0787.
@article{osti_305495,
title = {Electron impact excitation cross sections in F-like selenium},
author = {Guoxin, Chen and Inst. of Applied Physics and Computational Mathematics, Beijing and Ong, P P},
abstractNote = {Cross sections for excitation induced by electron collision between low-lying 1s{sup 2}2s{sup 2}2p{sup 5} and 1s{sup 2}2s2p{sup 6} states of f-like selenium and from these states to singly excited states with the excited electron occupying the M shell have been calculated by relativistic distorted-wave Born procedures. The GRASP{sup 2} code was used for the atomic structure calculations. The continuum orbitals for the construction of continuum states were computed in the distorted-wave approximation, in which the distorted-wave potential used was the spherically averaged potential of the nucleus plus the potential of the bound electrons of the bound state. The cross sections for excitations were computed first by a 233-level multiconfiguration Dirac-Fock (MCDF) configuration expansion and then by a 279-level MCDF configuration expansion. The latter procedure, which also took into account contributions from all the participating singly excited N-shell states, was found to be necessary for improved accuracy. The cross section data should be a useful reference in the development of x-ray lasers and other related fields involving highly stripped ions.},
doi = {10.1006/adnd.1998.0787},
url = {https://www.osti.gov/biblio/305495}, journal = {Atomic Data and Nuclear Data Tables},
number = 1,
volume = 70,
place = {United States},
year = {Tue Sep 01 00:00:00 EDT 1998},
month = {Tue Sep 01 00:00:00 EDT 1998}
}