A platform for x-ray Thomson scattering measurements of radiation hydrodynamics experiments on the NIF

H J LeFevre; K Ma; P X Belancourt; M J MacDonald; T Döppner; C M Huntington; E Johnsen; P A Keiter; C C Kuranz

doi:10.1063/1.5039392

A platform for x-ray Thomson scattering measurements of radiation hydrodynamics experiments on the NIF

Rev Sci Instrum. 2018 Oct;89(10):10F105. doi: 10.1063/1.5039392.

Authors

H J LeFevre¹, K Ma², P X Belancourt³, M J MacDonald⁴, T Döppner⁴, C M Huntington⁴, E Johnsen², P A Keiter³, C C Kuranz³

Affiliations

¹ Applied Physics, University of Michigan, 450 Church Street, Ann Arbor, Michigan 48109, USA.
² Mechanical Engineering, University of Michigan, 2350 Hayward Street, Ann Arbor, Michigan 48109, USA.
³ Climate and Space Sciences and Engineering, University of Michigan, 2455 Hayward Street, Ann Arbor, Michigan 48109, USA.
⁴ Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, USA.

PMID: 30399938
DOI: 10.1063/1.5039392

Abstract

We present an experimental design for a radiation hydrodynamics experiment at the National Ignition Facility that measures the electron temperature of a shocked region using the x-ray Thomson scattering technique. Previous National Ignition Facility experiments indicate a reduction in Rayleigh-Taylor instability growth due to high energy fluxes, compared to the shocked energy flux, from radiation and electron heat conduction. In order to better quantify the effects of these energy fluxes, we modified the previous experiment to allow for non-collective x-ray Thomson scattering to measure the electron temperature. Photometric calculations combined with synthetic scattering spectra demonstrate an estimated noise.