Publications [#333320] of Anton P. Tonchev

Papers Published
  1. Matthews, EF; Goldblum, BL; Bernstein, LA; Quiter, BJ; Brown, JA; Younes, W; Burke, JT; Padgett, SW; Ressler, JJ; Tonchev, AP, FIER: Software for analytical modeling of delayed gamma-ray spectra, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 891 (May, 2018), pp. 111-117 [doi] .

    Abstract:
    A new software package, the Fission Induced Electromagnetic Response (FIER) code, has been developed to analytically predict delayed γ-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 γ-ray emission rates to obtain the corresponding delayed γ-ray spectra. FIER output was compared to experimental data obtained by irradiation of a 235U 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 γ-ray emissions and their contributing nuclear species, decay chains, and parent fission fragments, yielding a new capability for the nuclear science community.

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