Pushing the limits of plasma length in inertial fusion laser-plasma interaction experiments

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We demonstrate laser beam propagation and low backscatter in laser produced hohlraum plasmas of ignition plasma length. At intensities I < 5 x 10{sup 14} W cm{sup -2} greater than 80% of the energy in a blue (3{omega}, 351 nm) laser is transmitted through a L=5-mm long, high-temperature (T{sub e} = 2.5 keV), high-density (n{sub e} = 5 x 10{sup 20} cm{sup -3}) plasma. These experiments show that the backscatter scales exponentially with plasma length which is consistent with linear theory. The backscatter calculated by a new steady state 3D laser-plasma interaction code developed for large ignition plasmas is in ... continued below

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Froula, D; Divol, L; London, R; Michel, P; Berger, R L; Meezan, N et al. August 2, 2007.

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We demonstrate laser beam propagation and low backscatter in laser produced hohlraum plasmas of ignition plasma length. At intensities I < 5 x 10{sup 14} W cm{sup -2} greater than 80% of the energy in a blue (3{omega}, 351 nm) laser is transmitted through a L=5-mm long, high-temperature (T{sub e} = 2.5 keV), high-density (n{sub e} = 5 x 10{sup 20} cm{sup -3}) plasma. These experiments show that the backscatter scales exponentially with plasma length which is consistent with linear theory. The backscatter calculated by a new steady state 3D laser-plasma interaction code developed for large ignition plasmas is in good agreement with the measurements.

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PDF-file: 6 pages; size: 0.8 Mbytes

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  • Journal Name: Pushing the limits of plasma length in inertial fusion laser-plasma interaction experiments, na, no. 100, January 11, 2008, pp. 015002; Journal Volume: 100; Journal Issue: 1

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  • Report No.: UCRL-JRNL-233624
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 941392
  • Archival Resource Key: ark:/67531/metadc898623

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  • August 2, 2007

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  • Sept. 27, 2016, 1:39 a.m.

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  • Nov. 30, 2016, 7:07 p.m.

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Froula, D; Divol, L; London, R; Michel, P; Berger, R L; Meezan, N et al. Pushing the limits of plasma length in inertial fusion laser-plasma interaction experiments, article, August 2, 2007; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc898623/: accessed December 14, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.