Journal of Radioanalytical and Nuclear Chemistry

, Volume 303, Issue 2, pp 1335–1338 | Cite as

First fission yield measurements at the National Ignition Facility: 14-MeV neutron fission of 238U

  • Narek GharibyanEmail author
  • Kenton J. Moody
  • John D. Despotopulos
  • Patrick M. Grant
  • Dawn A. Shaughnessy


The use of the Solid Radiochemistry diagnostic platform at the National Ignition Facility (NIF) has allowed the development and implementation of the Target Option Activation Device assembly for fielding materials of interest inside the NIF chamber during high yield neutron shots. Preliminary studies with ultra-depleted uranium have allowed for the measurements of fission yields of 238U. Radiochemical procedures were utilized for the separation of fission and reaction products from the target material to provide higher sensitivity measurements. Cumulative fission mass-yields for 32 different isobars, 72 ≤ A ≤ 153, were measured from experiments fielded on two separate NIF shots.


14-MeV neutrons Fission yields 238TOAD NIF 



The authors would like to thank the NIF engineers Kenn Knittel and Bahram Talison, who were instrumental in the design process and in fielding the TOAD assembly. We also thank the staff of the Nuclear Counting Facility at Lawrence Livermore National Laboratory, including B. Bandong, P. Torretto and T. Wooddy. This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344.


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2014

Authors and Affiliations

  • Narek Gharibyan
    • 1
    Email author
  • Kenton J. Moody
    • 1
  • John D. Despotopulos
    • 1
    • 2
  • Patrick M. Grant
    • 1
  • Dawn A. Shaughnessy
    • 1
  1. 1.Lawrence Livermore National LaboratoryLivermoreUSA
  2. 2.University of Nevada, Las VegasLas VegasUSA

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