Transport of kJ-laser-driven relativistic electron beams in cold and shock-heated vitreous carbon and diamond

M Bailly-Grandvaux, J Kim, C M Krauland, S Zhang, M Dozières, M S Wei, W Theobald, P E Grabowski, J J Santos, Ph Nicolai, P McKenna, M P Desjarlais, F N Beg

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Abstract

We report experimental results on relativistic electron beam (REB) transport in a set of cold and shock-heated carbon samples using the high-intensity kilojoule-class OMEGA EP laser. The REB energy distribution and transport were diagnosed using an electron spectrometer and x-ray fluorescence measurements from a Cu tracer buried at the rear side of the samples. The measured rear REB density shows brighter and narrower signals when the targets were shock-heated. Hybrid PIC simulations using advanced resistivity models in the target warm-dense-matter (WDM) conditions confirm this observation. We show that the resistivity response of the media, which governs the self-generated resistive fields, is of paramount importance to understand and correctly predict the REB transport.
Original languageEnglish
Article number033031
Number of pages13
JournalNew Journal of Physics
Volume22
Issue number3
Early online date25 Feb 2020
DOIs
Publication statusPublished - 23 Mar 2020

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Keywords

  • relativistic electron beam (REB)
  • electron spectrometer
  • x-ray fluorescence

Cite this

Bailly-Grandvaux, M., Kim, J., Krauland, C. M., Zhang, S., Dozières, M., Wei, M. S., ... Beg, F. N. (2020). Transport of kJ-laser-driven relativistic electron beams in cold and shock-heated vitreous carbon and diamond. New Journal of Physics, 22(3), [033031]. https://doi.org/10.1088/1367-2630/ab7a06