An investigation of the L-shell x-ray conversion efficiency for laser-irradiated tin foils

David Bailie, Cormac Hyland, Raj L. Singh, Steven White, Gianluca Sarri, Francis P. Keenan, David Riley, Steven J. Rose, Edward G. Hill, Feilu Wang, Dawei Yuan, Gang Zhao, Huigang Wei, Bo Han, Baoqiang Zhu, Jianqiang Zhu, Pengqian Yang

Research output: Contribution to journalArticle

Abstract

We have used the Shenguang II laser in third harmonic (351 nm) to investigate the emission of L-shell radiation in the 3.3–4.4 keV range generated using thin foils of Sn coated onto a parylene substrate with irradiation of order 1015 W cm‑2 and nanosecond pulse duration. In our experiment, we have concentrated on assessing the emission on the non-laser irradiated side as this allows an experimental geometry relevant to experiments on photo-ionised plasmas where a secondary target must be placed close to the source, to achieve x-ray fluxes appropriate to astrophysical objects. Overall L-shell conversion efficiencies are estimated to be of order 1%, with little dependence on Sn thickness between 400 and 800 nm.
Original languageEnglish
Article number045201
Number of pages7
JournalPlasma Sources Science and Technology
Volume22
Issue number4
DOIs
Publication statusPublished - 13 Jan 2020
Externally publishedYes

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Keywords

  • conversion efficiency
  • laser plasma x-ray sources
  • laboratory astrophysics

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