Distinguishing fissions of 232Th, 237Np and 238U with beta-delayed gamma   rays
  Measurements of beta-delayed gamma-ray spectra following 14-MeV neutron-induced fissions of 232Th, 237Np, and 238U 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 gamma-ray lines were extracted from the data that allow identification of the fissioning isotope. 
A. Iyengar, E.B. Norman, C. Howard, C. Angell, A. Kaplan, J. J.   Ressler, P. Chodash, E. Swanberg, A. Czeszumska, B. Wang, ...
nucl-ex