Inference of the electron temperature in ICF implosions from X-ray spectra

ORAL

Abstract

Two main approaches to assessing the electron temperature in ICF implosions are now being considered, which are based on measuring, respectively, line emission from a high-Z dopant such as krypton [1] or spectral continuum of 15 to 30 keV from electrons scattering off the D and T ions [2,3]. However, both types of the X-ray emission are due to suprathermal free electrons, which likely deviate from Maxwellian. We present the first theoretical study of both the line and continuum X-ray spectra from the hot-spot accounting for this deviation. In particular, we show that inferring the electron temperature as if the emitting electrons are Maxwellian gives a lower value than the actual one [4].

References

[1] H. Chen et al. Phys. Plasmas 24 (2017) 072715

[2] L. Jarrott, et al. Rev. Sci. Inst. 87 (2016) 11E534

[3] D. B. Thorn et al. Proc. SPIE 10390 (2017) 1039009

[4] G. Kagan et al. https://arxiv.org/abs/1710.01343

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Presenters

  • Grigory A Kagan

    Los Alamos Natl Lab, Los Alamos National Laboratory

Authors

  • Grigory A Kagan

    Los Alamos Natl Lab, Los Alamos National Laboratory

  • Otto L Landen

    Lawrence Livermore Natl Lab, Lawrence Livermore National Laboratory

  • D. Svyatskiy

    Los Alamos Natl Lab

  • Peter Hakel

    Los Alamos Natl Lab

  • C.J. Joseph McDevitt

    Los Alamos National Laboratory, Los Alamos Natl Lab

  • Hong Sio

    Massachusetts Inst of Tech-MIT, MIT

  • Neel Kabadi

    Massachusetts Inst of Tech-MIT, MIT

  • R.A. Simpson

    MIT

  • M. Gatu Johnson

    MIT

  • Johan Frenje

    Massachusetts Inst of Tech-MIT, MIT

  • Richard David Petrasso

    Massachusetts Inst of Tech-MIT, MIT

  • Rahul C Shah

    Lab for Laser Energetics, Laboratory for Laser Energetics, Laboratory for Laser Energetics, University of Rochester, Laboratory for Laser Energetics, U. of Rochester, Lab for Laser Energetics, Univ of Rochester

  • Michael J Rosenberg

    University of Rochester, Univ of Rochester, Univ of Rochester LLE, Laboratory for Laser Energetics, University of Rochester, Laboratory for Laser Energetics, Lab for Laser Energetics

  • Reuben Epstein

    Univ of Rochester, Laboratory for Laser Energetics, University of Rochester, Lab for Laser Energetics, Laboratory for Laser Energetics, U. of Rochester

  • Sean P Regan

    Univ of Rochester, Univ of Rochester, Univ of Rochester, Laboratory for Laser Energetics, Laboratory for Laser Energetics, University of Rochester, Laboratory for Laser Energetics U. of Rochester, Laboratory for Laser Energetics, U. of Rochester, Laboratory for Laser Energetics, Rochester, New York, University of Rochester, Lab for Laser Energetics

  • Tirtha R Joshi

    Los Alamos National Laboratory, Los Alamos Natl Lab

  • Thomas E Weber

    Los Alamos National Laboratory, Los Alamos Natl Lab

  • Hans G. Rinderknecht

    Lawrence Livermore Natl Lab, Lawrence Livermore Natl Lab, Laboratory for Laser Energetics

  • Daniel B. Thorn

    Lawrence Livermore Natl Lab, Lawrence Livermore National Laboratory

  • Marilyn Beth Schneider

    Lawrence Livermore Natl Lab, Lawrence Livermore National Lab, Lawrence Livermore National Laboratory

  • David K. Bradley

    Lawrence Livermore Natl Lab

  • Joe D. Kilkenny

    General Atomics, Lawrence Livermore Natl Lab