Electron impact excitation cross sections in F-like selenium

Journal Article · Tue Sep 01 04:00:00 EDT 1998 · Atomic Data and Nuclear Data Tables

DOI:https://doi.org/10.1006/adnd.1998.0787· OSTI ID:305495

Guoxin, Chen ^[1]; Ong, P P ^[1]

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1. National Univ. of Singapore (Singapore). Physics Dept.

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.

• Sponsoring Organization: USDOE
• OSTI ID: 305495
• Journal Information: Atomic Data and Nuclear Data Tables, Journal Name: Atomic Data and Nuclear Data Tables Journal Issue: 1 Vol. 70; ISSN ADNDAT; ISSN 0092-640X
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CROSS SECTIONS
DWBA
ELECTRON-ION COLLISIONS
ELECTRONIC STRUCTURE
EXCITATION
OSCILLATOR STRENGTHS
SELENIUM IONS
THEORETICAL DATA