Forbidden-line spectroscopy of the ground-state configuration of Cd-like W

Forbidden-line spectroscopy of the ground-state configuration of Cd-like W

only using electric-dipole forbidden emission lines, in what we label forbidden-line spectroscopy, we identified several energy levels in cadmium-like tungsten, W26+. The spectrum was recorded at the Shanghai permanentmagnet electron beam ion trap in the visible region. The identifications were supp...

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Bibliographic Details
Published in:Physical review. A, Atomic, molecular, and optical physics Vol. 90; no. 5
Main Authors: Fei, Z., Li, W., Grumer, J., Shi, Z., Zhao, R., Brage, T., Huldt, S., Yao, K., Hutton, R., Zou, Y.
Format: Journal Article
Language:English
Published: 19-11-2014
Subjects:
Condensed Matter Physics
Den kondenserade materiens fysik
Fysik
Natural Sciences
Naturvetenskap
Physical Sciences
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Summary:only using electric-dipole forbidden emission lines, in what we label forbidden-line spectroscopy, we identified several energy levels in cadmium-like tungsten, W26+. The spectrum was recorded at the Shanghai permanentmagnet electron beam ion trap in the visible region. The identifications were supported by large-scale multiconfiguration Dirac-Hartree-Fock calculations which involved careful investigations of core-valence and core-core correlation effects, and by relativistic many-body perturbation theory calculations. With this novel method we identified in all seven lines and measured their wavelengths. From this we can determine the relative position of seven energy levels. Due to the close degeneracy of two levels, we give alternative energies for three of the levels.
ISSN:1050-2947
1094-1622
DOI:10.1103/PhysRevA.90.052517