X-ray absorption spectroscopy study of energy transport in foil targets heated by petawatt laser pulses

I. Yu. Skobelev, S. N. Ryazantsev, D. D. Arich, P. S. Bratchenko, A. Ya . Faenov, T. A. Pikuz, P. Durey, L. Doehl, D. Farley, C. D. Baird, K. L. Lancaster, C. D. Murphy, N. Booth, C Spindloe, P. McKenna, S. B. Hansen, J. Colgan, R Kodama, N. Woolsey, S. A. Pikuz*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


X-ray absorption spectroscopy is proposed as a method for studying the heating of solid-density matter excited by secondary X-ray radiation from a relativistic laser-produced plasma. The method was developed and applied to experiments involving thin silicon foils irradiated by 0.5–1.5 ps duration ultrahigh contrast laser pulses at intensities between 0.5 × 1020 and 2.5 × 1020 W∕cm2. The electron temperature of the material at the rear side of the target is estimated to be in the range of 140–300 eV. The diagnostic approach enables the study of warm dense matter states with low self-emissivity.

Original languageEnglish
Pages (from-to)234-237
Number of pages4
JournalPhotonics Research
Issue number4
Publication statusPublished - 2 Mar 2018

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