Late Prompt Fission Gamma Rays from 235U(n,f) and 252Cf(sf)

G. Rusev; E. M. Bond; T. A. Bredeweg; A. Couture; J. M. O’Donnell; M. Jandel; A.E. Lovell; S. Mosby; C. J. Prokop; I. Stetcu; P. Talou; J. L. Ullmann

doi:10.1051/epjconf/202024201007

EPJ

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Proceedings

Open Access

EPJ Web of Conferences 242, 01007 (2020)
https://doi.org/10.1051/epjconf/202024201007

Late Prompt Fission Gamma Rays from ²³⁵U(n,f) and ²⁵²Cf(sf)

G. Rusev¹^*, E. M. Bond¹, T. A. Bredeweg¹, A. Couture¹, J. M. O’Donnell¹, M. Jandel¹^,2, A.E. Lovell¹, S. Mosby¹, C. J. Prokop¹, I. Stetcu¹, P. Talou¹ and J. L. Ullmann¹

¹ Los Alamos National Laboratory, Los Alamos, NM 87545, USA
² University of Massachusetts Lowell, Lowell, MA 01854, USA

^* e-mail: rusev@lanl.gov

Published online: 28 September 2020

Abstract

Two measurements of fission γ rays were performed with the DANCE and NEUANCE arrays using the reactions ²³⁵ U(n, f) and ²⁵² Cf(sf). Utilizing the fast time response of the detectors and a method for estimating the accidental background, we obtained the energy spectrum of the late prompt fission γ rays as a function of the time since fission. The experimental results are compared with predictions of the code CGMF folded with GEANT4 simulations of the detector response.

© The Authors, published by EDP Sciences, 2020

This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.