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

作者：Harte Colm S^*; Higashiguchi Takeshi; Otsuka Takamitsu; D' Arcy Rebekah; Kilbane Deirdre; O' Sullivan Gerry

来源：Journal of Physics B: Atomic, Molecular and Optical Physics , 2012, 45(20): 205002.

DOI：10.1088/0953-4075/45/20/205002

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 1-7 nm 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 3 nm 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.

• 出版日期2012-10-28