MEASUREMENT OF DECAY HEAT OF FAST-NEUTRON FISSION-PRODUCTS

Experimental study on decay heat of fast neutron fission products usin g the fast neutron source reactor YAYOI at the University of Tokyo is reviewed in this paper. The decay heat was measured on U-233, U-235, P u-239, U-238 and Th-232 using beta- and gamma-spectroscopic method. Th eir results were compared with other data and results of summation cal culations using some fission product decay data files, and also have b een used in the benchmark experiments for the improvement of fission p roduct decay data files. (C) 1997 Elsevier Science Ltd.