Abstract
In this paper we present first results for prompt fission -ray spectra (PFGS) characteristics from the spontaneous fission (sf) of and . For we obtained, after proper unfolding of the detector response, an average energy per photon MeV, an average multiplicity , and an average total -ray energy release per fission = ( 0.06) MeV. The emission spectrum was obtained by applying a so-called detector-response transformation function determined from the spectrum measured in exactly the same geometry. The results are an average energy per photon MeV, the average multiplicity = ( 0.4), and an average total -ray energy release per fission = ( 0.5) MeV. The PFGS characteristics for are in very good agreement with those from thermal-neutron-induced fission on and scales well with the corresponding prompt neutron multiplicity. Our results in the case of , although drawn from a limited number of events, show a significantly enhanced average multiplicity and average total energy, but may be understood from a different fragment yield distribution in compared to that of .
- Received 2 March 2016
DOI:https://doi.org/10.1103/PhysRevC.93.054603
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Published by the American Physical Society