Share Email Print
cover

Proceedings Paper

Measuring the hot-electron population using time-resolved hard x-ray detectors on the NIF
Author(s): M. Hohenberger; N. E. Palmer; G. LaCaille; E. L. Dewald; L. Divol; E. J. Bond; T. Döppner; J. J. Lee; R. L. Kauffman; J. D. Salmonson; C. A. Thomas; D. K. Bradley; C. Stoeckl; T. C. Sangster
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

In laser-driven inertial confinement fusion, hot electrons can preheat the fuel and prevent compression of the capsule to ignition conditions. Measuring the hot-electron population in these high-intensity, laser-driven experiments is key to understanding the laser–plasma interaction and the resulting target evolution. This can be inferred from the bremsstrahlung generated by the interaction of the hot electrons with the target. At the National Ignition Facility (NIF), the filter-fluorescer x-ray diagnostic (FFLEX), a multichannel, hard x-ray spectrometer operating in the 20- to 500-keV range, was recently upgraded to provide time-resolved measurements of the bremsstrahlung spectrum. Characterization data is presented for the upgraded setup, as well as recent results from ignition-scale experiments.

Paper Details

Date Published: 26 September 2013
PDF: 9 pages
Proc. SPIE 8850, Target Diagnostics Physics and Engineering for Inertial Confinement Fusion II, 88500F (26 September 2013); doi: 10.1117/12.2024960
Show Author Affiliations
M. Hohenberger, Univ. of Rochester (United States)
N. E. Palmer, Lawrence Livermore National Lab. (United States)
G. LaCaille, Lawrence Livermore National Lab. (United States)
E. L. Dewald, Lawrence Livermore National Lab. (United States)
L. Divol, Lawrence Livermore National Lab. (United States)
E. J. Bond, Lawrence Livermore National Lab. (United States)
T. Döppner, Lawrence Livermore National Lab. (United States)
J. J. Lee, National Security Technologies, LLC (United States)
R. L. Kauffman, Lawrence Livermore National Lab. (United States)
J. D. Salmonson, Lawrence Livermore National Lab. (United States)
C. A. Thomas, Lawrence Livermore National Lab. (United States)
D. K. Bradley, Lawrence Livermore National Lab. (United States)
C. Stoeckl, Univ. of Rochester (United States)
T. C. Sangster, Univ. of Rochester (United States)


Published in SPIE Proceedings Vol. 8850:
Target Diagnostics Physics and Engineering for Inertial Confinement Fusion II
Perry M. Bell; Gary P. Grim, Editor(s)

© SPIE. Terms of Use
Back to Top