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.
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Publication: paper submitted to PoP
Presenters
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Andreas J Kemp
Lawrence Livermore Natl Lab, Lawrence Livermore National Laboratory
Authors
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Andreas J Kemp
Lawrence Livermore Natl Lab, Lawrence Livermore National Laboratory
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Scott Wilks
LLNL, Lawrence Livermore Natl Lab, Lawrence Livermore National Laboratory
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Ginevra E Cochran
Lawrence Livermore Natl Lab
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Shaun M Kerr
Lawrence Livermore Natl Lab, Lawrence Livermore National Laboratory
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Jaebum Park
Colorado State University
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Gary Grim
Lawrence Livermore Natl Lab
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Riccardo Tommasini
Lawrence Livermore Natl Lab