https://doi.org/10.1051/epjconf/201612201011
Total prompt γ-ray emission in fission
1 Lawrence Livermore National Laboratory, Livermore, California 94550 USA
2 North Carolina State University, Raleigh, North Carolina 27695 USA
3 National Superconducting Cyclotron Laboratory, East Lansing, Michigan 48824 USA
4 Los Alamos National Laboratory, Los Alamos, New Mexico 87545 USA
a Corresponding author: wu24@llnl.gov
Published online: 21 June 2016
The total prompt γ-ray energy distributions for the neutron-induced fission of 235U, 239,241Pu at incident neutron energy of 0.025 eV ‒ 100 keV, and the spontaneous fission of 252Cf were measured using the Detector for Advanced Neutron Capture Experiments (DANCE) array in coincidence with the detection of fission fragments by a parallel-plate avalanche counter. DANCE is a highly segmented, highly efficient 4π γ-ray calorimeter. Corrections were made to the measured distribution by unfolding the two-dimension spectrum of total γ-ray energy vs multiplicity using a simulated DANCE response matrix. The mean values of the total prompt γ-ray energy, determined from the unfolded distributions, are ~ 20% higher than those derived from measurements using single γ-ray detector for all the fissile nuclei studied. This raises serious concern on the validity of the mean total prompt γ-ray energy obtained from the product of mean values for both prompt γ-ray energy and multiplicity.
© The Authors, published by EDP Sciences, 2016
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.
