Epithermal Neutron Source for Neutron Resonance Spectroscopy (NRS) using High Intensity, Short Pulse Lasers

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A neutron source for neutron resonance spectroscopy (NRS) has been developed using high intensity, short pulse lasers. This measurement technique will allow for robust measurements of interior ion temperature of laser-shocked materials and provide insight into equation of state (EOS) measurements. The neutron generation technique uses protons accelerated by lasers off of Cu foils to create neutrons in LiF, through (p,n) reactions with {sup 7}Li and {sup 19}F. The distribution of the incident proton beam has been diagnosed using radiochromic film (RCF). This distribution is used as the input for a (p,n) neturon prediction code which is compared to experimentally ... continued below

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6 p. (0.2 MB)

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Higginson, D P; McNaney, J M; Swift, D C; Bartal, T; Hey, D S; Pape, S L et al. April 22, 2010.

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A neutron source for neutron resonance spectroscopy (NRS) has been developed using high intensity, short pulse lasers. This measurement technique will allow for robust measurements of interior ion temperature of laser-shocked materials and provide insight into equation of state (EOS) measurements. The neutron generation technique uses protons accelerated by lasers off of Cu foils to create neutrons in LiF, through (p,n) reactions with {sup 7}Li and {sup 19}F. The distribution of the incident proton beam has been diagnosed using radiochromic film (RCF). This distribution is used as the input for a (p,n) neturon prediction code which is compared to experimentally measured neutron yields. From this calculation, a total fluence of 1.8 x 10{sup 9} neutrons is infered, which is shown to be a reasonable amount for NRS temperature measurement.

Physical Description

6 p. (0.2 MB)

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PDF-file: 6 pages; size: 0.2 Mbytes

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  • Journal Name: Physics of Plasmas, vol. 17, no. 10, October 14, 2010, pp. 100701; Journal Volume: 17; Journal Issue: 10

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  • Report No.: LLNL-JRNL-428631
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 1009649
  • Archival Resource Key: ark:/67531/metadc846921

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • April 22, 2010

Added to The UNT Digital Library

  • May 19, 2016, 3:16 p.m.

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  • April 17, 2017, 12:11 p.m.

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Higginson, D P; McNaney, J M; Swift, D C; Bartal, T; Hey, D S; Pape, S L et al. Epithermal Neutron Source for Neutron Resonance Spectroscopy (NRS) using High Intensity, Short Pulse Lasers, article, April 22, 2010; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc846921/: accessed December 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.