X-Ray Backlighting Sources Of 4 To 10 keV For Laser Fusion Targets

V. C. Rupert; D. L. Matthews; L. N. Koppel

doi:10.1117/12.932921

9 August 1983 X-Ray Backlighting Sources Of 4 To 10 keV For Laser Fusion Targets

V. C. Rupert, D. L. Matthews, L. N. Koppel

Proceedings Volume 0312, 1st European Conf on Cineradiography with Photons or Particles; (1983) https://doi.org/10.1117/12.932921
Event: 1st European Conference on Cineradiography with Photons or Particles, 1981, Paris, France

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.*

Citation Download Citation

V. C. Rupert, D. L. Matthews, and L. N. Koppel "X-Ray Backlighting Sources Of 4 To 10 keV For Laser Fusion Targets", Proc. SPIE 0312, 1st European Conf on Cineradiography with Photons or Particles, (9 August 1983); https://doi.org/10.1117/12.932921

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