12.6 keV Kr K-alpha X-ray Source For High Energy Density Physics Experiments

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A high contrast 12.6 keV Kr K{alpha} source has been demonstrated on the petawatt-class Titan laser facility. The contrast ratio (K{alpha} to continuum) is 65, with a competitive ultra short pulse laser to x-ray conversion efficiency of 10{sup -5}. Filtered shadowgraphy indicates that the Kr K{alpha} and K{beta} x-rays are emitted from a roughly 1 x 2 mm emission volume, making this source suitable for area backlighting and scattering. Spectral calculations indicate a typical bulk electron temperature of 50-70 eV (i.e. mean ionization state 13-16), based on the observed ratio of K{alpha} to K{beta}. Kr gas jets provide a debris-free ... continued below

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6 p. (0.5 MB)

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Kugland, N; Constantin, C G; Niemann, C; Neumayer, P; Chung, H; Doppner, T et al. April 22, 2008.

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A high contrast 12.6 keV Kr K{alpha} source has been demonstrated on the petawatt-class Titan laser facility. The contrast ratio (K{alpha} to continuum) is 65, with a competitive ultra short pulse laser to x-ray conversion efficiency of 10{sup -5}. Filtered shadowgraphy indicates that the Kr K{alpha} and K{beta} x-rays are emitted from a roughly 1 x 2 mm emission volume, making this source suitable for area backlighting and scattering. Spectral calculations indicate a typical bulk electron temperature of 50-70 eV (i.e. mean ionization state 13-16), based on the observed ratio of K{alpha} to K{beta}. Kr gas jets provide a debris-free high energy K{alpha} source for time-resolved diagnosis of dense matter.

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6 p. (0.5 MB)

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PDF-file: 6 pages; size: 0.5 Mbytes

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  • Presented at: High Temperature Plasma Diagnostics, Albuquerque, NM, United States, May 11 - May 15, 2008

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  • Report No.: LLNL-CONF-403481
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 938502
  • Archival Resource Key: ark:/67531/metadc901190

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Office of Scientific & Technical Information Technical Reports

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  • April 22, 2008

Added to The UNT Digital Library

  • Sept. 27, 2016, 1:39 a.m.

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  • April 17, 2017, 1:06 p.m.

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Kugland, N; Constantin, C G; Niemann, C; Neumayer, P; Chung, H; Doppner, T et al. 12.6 keV Kr K-alpha X-ray Source For High Energy Density Physics Experiments, article, April 22, 2008; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc901190/: accessed June 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.