Absorption of relativistic multi-picosecond laser pulses in wire arrays

ORAL

Abstract

We study the interaction of intense multi-picosecond laser pulses with arrays of carbon wires attached to solid substrates. We find that laser absorption in wire arrays resembles that in flat targets with very large uniform plasma density gradients. Performing two-dimensional particle-in-cell simulations, we optimize target parameters like wire thickness and -distance for energy absorption of a 2ps laser pulse with a large focal spot; this has implications for x-ray- and charged particle source development.

 

*This work was completed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under contract DE-AC52-07NA27344 with funding support from the Laboratory Directed Research and Development Program under tracking code 20-ERD-026, the DOE Office of Science Early Career Research Program under SCW1265-1.

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Publication: paper submitted to PoP

Presenters

  • Andreas J Kemp

    • Lawrence Livermore Natl Lab
    • Lawrence Livermore National Laboratory

Authors

  • Andreas J Kemp

    • Lawrence Livermore Natl Lab
    • Lawrence Livermore National Laboratory

  • Scott Wilks

    • LLNL
    • Lawrence Livermore Natl Lab
    • Lawrence Livermore National Laboratory

  • Ginevra E Cochran

    • Lawrence Livermore Natl Lab

  • Shaun M Kerr

    • Lawrence Livermore Natl Lab
    • Lawrence Livermore National Laboratory

  • Jaebum Park

    • Colorado State University

  • Gary Grim

    • Lawrence Livermore Natl Lab

  • Riccardo Tommasini

    • Lawrence Livermore Natl Lab