Interface of Fission Product Delayed n/γ Environments with Nuclear Effects Codes

Since a research reactor radiation environment has both prompt and delayed fission components for the neutron and photon fields and we are often investigating a transient response of a material in a radiation environment, we are faced with having to use diagnostic measurements to deconvolute the radiation environment based on the mixed neutron/photon response time-dependent response from PCDs and PINs and the time-integrated measurements from activation foils and calorimeters. We need to model the fission product radiation environment in order to support this deconvolution. We also need accurate estimates of the uncertainty in our sensors, and these are only provided though validation experiments and an examination of the consistency of different measurements.

Contact: Matt Sternat


  • M. Sternat, “Advanced debris neutron and gamma environment characterization using CINDER”, SAND2018-7573J, 2018
  • M. Sternat, et al., “NuGET Debris Neutron and Gamma Environment Characterization Using CINDER”, SAND2018-3485C, 2018
  • M. Sternat, et al., “Debris neutron and gamma emission rates and spectra using CINDER/ENDF-B/VII Data”, SAND2018-3487, 2018
  • A. Salazar, et al., “Comparing debris radiation source term characterization methods between legacy codes and high fidelity, modern calculations using CINDER”, SAND2020-5006J, 2020