Analysis of soft x-ray emission spectra of laser-produced dysprosium, erbium and thulium plasmas

J. Sheil, P. Dunne, T. Higashiguchi, D. Kos, E. Long, T. Miyazaki, F. O'Reilly, G. O'Sullivan, P. Sheridan, C. Suzuki, E. Sokell, E. White, D. Kilbane

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

© 2017 IOP Publishing Ltd.Soft x-ray emission spectra of dysprosium, erbium and thulium ions created in laser-produced plasmas were recorded with a flat-field grazing-incidence spectrometer in the 2.5-8 nm spectral range. The ions were produced using an Nd:YAG laser of 7 ns pulse duration and the spectra were recorded at various power densities. The experimental spectra were interpreted with the aid of the Cowan suite of atomic structure codes and the flexible atomic code. At wavelengths above 5.5 nm the spectra are dominated by overlapping n = 4 - n = 4 unresolved transition arrays from adjacent ion stages. Below 6 nm, n = 4 - n = 5 transitions also give rise to a series of interesting overlapping spectral features.
Original languageEnglish
Article number065006
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Volume50
Issue number6
DOIs
Publication statusPublished - 7 Mar 2017
Externally publishedYes

Funding

FundersFunder number
Japan Society for the Promotion of Science16H03902, 15H03759, 15H03570

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