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Proceedings Paper

X-Ray Backlighting Sources Of 4 To 10 keV For Laser Fusion Targets
Author(s): V. C. Rupert; D. L. Matthews; L. N. Koppel
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Paper Abstract

High-density, short-duration x-ray pulses are necessary to diagnose the compression of laser fusion targets. Present target designs are such that backlighting sources ranging from a few thousand electron volts to 100 keV will be necessary. The desired source durations range from a few tens of picoseconds for flash radiography to several nanoseconds for streaked backlighting, and the source occurence must be tightly synchronized to that of the target-irradiating laser pulse. For the latter reason, a laser-induced x-ray pulse is preferred. An initial study of the K lines of Ti, Ni, and Zn as possible backlighting sources was conducted. The conversion efficiency of laser light into line radiation was obtained as a function of laser intensity, pulse length, and wavelength. A threshold laser intensity for x-ray line production was identified. Information was obtained on the size and duration of the x-ray emission source, in relation to laser parameters. The experimental results, and their impact on backlighting capability for high-density laser fusion targets, are discussed.*

Paper Details

Date Published: 9 August 1983
PDF: 7 pages
Proc. SPIE 0312, 1st European Conf on Cineradiography with Photons or Particles, (9 August 1983); doi: 10.1117/12.932921
Show Author Affiliations
V. C. Rupert, Lawrence Livermore National Laboratory (United States)
D. L. Matthews, Lawrence Livermore National Laboratory (United States)
L. N. Koppel, Lawrence Livermore National Laboratory (United States)


Published in SPIE Proceedings Vol. 0312:
1st European Conf on Cineradiography with Photons or Particles
Jacques J. Marilleau, Editor(s)

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