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arXiv · 1304.8051

Measuring fast electron spectra and laser absorption in relativistic laser-solid interactions using differential bremsstrahlung photon detectors

R. H. H. Scott·E. L. Clark·F. Perez·M. J. V Streeter·J. R. Davies·H. -P. Schlenvoigt·J. J. Santos·S. Hulin·K. L. Lancaster·S. D. Baton·S. J. Rose·P. A. Norreys
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Abstract

A photon detector suitable for the measurement of bremsstrahlung spectra generated in relativistically-intense laser-solid interactions is described. The Monte Carlo techniques used to back-out the fast electron spectrum and laser energy absorbed into fast electrons are detailed. A relativistically-intense laser-solid experiment using frequency doubled laser light is used to demonstrate the effective operation of the detector. The experimental data was interpreted using the 3-spatial-dimension Monte Carlo code MCNPX (Pelowitz 2008), and the fast electron temperature found to be 125 keV.

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R. H. H. Scott, E. L. Clark, F. Perez, M. J. V Streeter, J. R. Davies, H. -P. Schlenvoigt, J. J. Santos, S. Hulin, K. L. Lancaster, S. D. Baton, S. J. Rose, P. A. Norreys. 2013-04-30. Measuring fast electron spectra and laser absorption in relativistic laser-solid interactions using differential bremsstrahlung photon detectors. https://doi.org/10.1063/1.4816332

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