FIER: Software for analytical modeling of delayed gamma-ray spectra
Abstract
A new software package, the Fission Induced Electromagnetic Response (FIER) code, has been developed to analytically predict delayed -ray spectra following fission. FIER uses evaluated nuclear data and solutions to the Bateman equations to calculate the time-dependent populations of fission products and their decay daughters resulting from irradiation of a fissionable isotope. These populations are then used in the calculation of -ray emission rates to obtain the corresponding delayed -ray spectra. FIER output was compared to experimental data obtained by irradiation of a U sample in the Godiva critical assembly. This investigation illuminated discrepancies in the input nuclear data libraries, showcasing the usefulness of FIER as a tool to address nuclear data deficiencies through comparison with experimental data. FIER provides traceability between -ray emissions and their contributing nuclear species, decay chains, and parent fission fragments, yielding a new capability for the nuclear science community.
Cite
@article{arxiv.2010.02210,
title = {FIER: Software for analytical modeling of delayed gamma-ray spectra},
author = {E. F. Matthews and B. L. Goldblum and L. A. Bernstein and B. J. Quiter and J. A. Brown and W. Younes and J. T. Burke and S. W. Padgett and J. J. Ressler and A. P. Tonchev},
journal= {arXiv preprint arXiv:2010.02210},
year = {2020}
}
Comments
11 pages, 10 figures