Measurement of Fission Product Yields and the Energy Integral Fission Cross Section of Thorium-232 in a Californium-252 Fission-Neutron Spectrum
- 1 February 1975
- journal article
- research article
- Published by Taylor & Francis in Nuclear Technology
- Vol. 25 (2) , 416-422
- https://doi.org/10.13182/nt75-a24378
Abstract
The absolute cumulative fission yield of 140Ba and the relative yields of 131I, 132Te, and 141Ce were measured for 232Th irradiated in a 252Cf fission spectrum of neutrons. The irradiation was performed using two 232Th foils in contact with a nominal 1-mg 252Cf source in a large evacuated area for 41 days. The absolute yield of 140Ba was deduced from an absolute measurement of its daughter product 140La using a calibrated NaI(Tl) detector. The activities of 131I, 132Te, and 141 Ce were measured relative to the 1596-ke V gamma ray of 140La using a 43-cm3 Ge(Li) detector. The fission rate for the yield measurement and the integral fission cross section were measured using mica solid-state track recorders.Keywords
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