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Tungsten spectroscopy in the EUV range observed at a high-temperature superconducting electron-beam ion trap

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Author

  • Wenxian Li
  • Zhan Shi
  • Yang Yang
  • Jun Xiao
  • Tomas Brage
  • Roger Hutton
  • Yaming Zou

Summary, in English

We have recorded extreme ultraviolet spectra from W11+ to W15+ ions using a flat-field spectrometer installed at the Shanghai high-temperature superconducting electron-beam ion trap. The spectra were recorded at beam energies ranging between 200 and 400 eV and showed spectral lines and transition arrays in the 170-260 angstrom region. The charge states and spectra transitions were identified by comparison with calculations using a detailed relativistic configuration interaction method and collisional-radiative model, both incorporated in the flexible atomic code. Atomic structure calculations showed that the dominant emission arises from 5d --> 5p and 5p --> 5s transitions. The work also identified the ground-state configuration of W13+ as 4f(13)5s(2) both theoretically and experimentally.

Publishing year

2015

Language

English

Publication/Series

Physical Review A (Atomic, Molecular and Optical Physics)

Volume

91

Issue

6

Document type

Journal article

Publisher

American Physical Society

Topic

  • Atom and Molecular Physics and Optics

Status

Published

ISBN/ISSN/Other

  • ISSN: 1050-2947