Distinguishing fissions of Th, Np and U with beta-delayed rays

Iyengar, A.*; Norman, E. B.*; Howard, C.*; Angell, C.; Kaplan, A.*; Ressler, J. J.*; Chodash, P.*; Swanberg, E.*; Czeszumska, A.*; Wang, B.*; et al.

Nuclear Instruments and Methods in Physics Research B, 304, p.11 - 15, 2013/06

https://doi.org/10.1016/j.nimb.2013.03.054

Measurements of beta-delayed -ray spectra following 14-MeV neutron-induced fissions of Th, U, and Np were conducted at Lawrence Berkeley National Laboratory's 88-Inch Cyclotron. Spectra were collected for times ranging from 1 minute to 14 hours after irradiation. Intensity ratios of -ray lines were extracted from the data that allow identification of the fissioning isotope.