Measurements of γ-ray Energy and Multiplicity from ²³⁵U(n_thermal) using STEFF

E-ISSN： 2100-014x|93|issue|02018-02018

ISSN： 2100-014x

Source： EPJ Web of Conference, Vol.93, Iss.issue, 2015-05, pp. : 02018-02018

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Abstract

The amount of energy carried by γ-rays during the fission process is an important consideration when developing new reactor designs. Many studies of γ-ray energy and multiplicity, from a multitude of fissioning systems, were measured during the 1970s. However the data from such experiments largely underestimates the heating effect caused by γ-rays in the structure of a reactor. It is therefore essential to obtain more accurate measurements of the energy carried during γ-ray emission. As such, the OECD Nuclear Energy Agency has put out a high priority request [1] for measurements of the mean γ-ray energy and multiplicity to an accuracy better than 7.5 percent from several fissioning systems; including ²³⁵U(n_thermal). Measurements of the rays from these fissioning nuclei were performed with the SpecTrometer for Exotic Fission Fagments (STEFF).