Journal of Radioanalytical and Nuclear Chemistry

, Volume 303, Issue 3, pp 1851–1856

Anomalous radiochemical recovery of post-detonation gold residues at the National Ignition Facility

  • Patrick M. Grant
  • Kenton J. Moody
  • Narek Gharibyan
  • John D. Despotopulos
  • Dawn A. Shaughnessy
Article
  • 123 Downloads

Abstract

Activated Au from a fragmented and dispersed NIF hohlraum is of interest to measure the induced 14.1-MeV 198m+gAu/196gAu isotope ratio as an assessment of shot performance. A radiochemical recovery procedure, based on Au complexation by cyanide in NaOH-NaCN solution, was developed to reclaim radiogold (*Au) residues from post-detonation graphite collector foils. The average overall radiochemical yield from grafoils in an equatorial position relative to the hohlraum was 88 %. However, the yield from the identical procedure applied to post-shot grafoils positioned axially (polar) was much decreased. The chemical dependency of explosion reaction products on collector position around an ostensibly symmetric fusion source is currently unexplained.

Keywords

Inertial confinement fusion (ICF) NIF post-detonation debris specimens 14.1-MeV neutron reaction products Graphite foil collectors Cyanide solution chemistry Au radiochemical recoveries Anomaly of NIF equatorial versus polar chemical behavior 

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2014

Authors and Affiliations

  • Patrick M. Grant
    • 1
  • Kenton J. Moody
    • 1
  • Narek Gharibyan
    • 1
  • John D. Despotopulos
    • 1
  • Dawn A. Shaughnessy
    • 1
  1. 1.Chemical Sciences Division, Experimental Nuclear and Radiochemistry GroupLivermore National LaboratoryLivermoreUSA

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