Analysis of tungsten laser produced plasmas in the extreme ultraviolet (EUV) spectral region

Colm S. Harte, Takeshi Higashiguchi, Takamitsu Otsuka, Rebekah Darcy, Deirdre Kilbane, Gerry Osullivan

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)

Abstract

Tungsten will be used as a wall material in ITER and therefore will be present as an intrinsic plasma impurity with the resulting emission having the potential to be used as a plasma diagnostic. We have recorded spectra of tungsten laser produced plasmas in the 1-7nm region using Nd:YAG lasers operating at a range of power densities. We have analysed these spectra, giving special attention to the unresolved transition arrays in the 3nm region that appear at the highest laser power densities. We compare our results to those from previous work and also use new atomic structure calculations to identify a number of new features.

Original languageEnglish
Article number205002
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Volume45
Issue number20
DOIs
Publication statusPublished - 28 Oct 2012
Externally publishedYes

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