Improved/Expanded Nuclear Data Processing with NJOY-2016

Improved/Expanded Nuclear Data Processing with NJOY-2016 In support of our application of nuclear data to mission areas, we use and build upon nuclear data processing codes such as NJOY-2016, FRENDY, and LISTEF. As one example of this, Sandia has tailored a version of the LANL-developed NJOY-2016 code to: a) permit user control of the form of the damage partition function used in determining the displacement damage; b) enable use of a user-specified recoil energy-dependent efficiency function; c) permit user control of the displacement threshold formalism, e.g., implementation of the Norgett-Robinson-Torrens (NRT) threshold treatment rather than the default sharp threshold Kinchin-Pease treatment; d) enable use of an arcdpa recoil energy-dependent efficiency function; e) suppress, for analysis purposes, the contribution of low atomic weight particles, e.g., protons and alpha particles, to the displacement damage; f) streamline the conversion of covariance data from the ERRORR module into the LSL or BOXER format; g) interface with codes to provide the burst generation rate (BGR) and LET spectra used to support nSEE damage metrics; and h) make corrections to how nuclear data is used within NJOY-2016 in producing the (n,γ) capture kerma.

Contact: Patrick Griffin

Project Scope:

  • Add NRT damage energy to complement the baseline sharp threshold Kinchin-Pease damage energy (complete)
  • Correct issues with the treatment of the capture reaction damage metrics (in process)
  • Add arcdpa efficiency function for damage metrics (in process)
  • Add user-defined damage partition function to complement the baseline Robinson analytic expression for the damage partition function (in process)