Even-odd effects in the prompt fission emission of even Z actinides
1 University of Bucharest, Faculty of Physics, 405 Atomistilor Str., POB MG-11, Magurele 77125, Romania
2 EC-JRC-Institute for Reference Materials and Measurements (IRMM), Retieseweg 111, Geel, 2440 Belgium
a Corresponding author: firstname.lastname@example.org
Published online: 15 March 2016
The investigation of even-odd effects in the prompt emission of even Z actinides showed a sawtooth shape of ν(Z) with staggering in the asymmetric fission region. Average prompt emission quantities as a function of A, e.g. ν(A), of even Z fragmentations are higher than those of odd Z fragmentations and they exhibit oscillations with a periodicity of about 5 mass units in the asymmetric fission region. This periodicity is not due to the Z even-odd effect in fragment distributions. The even-odd effect in <ν>(TKE) is increasing with increasing TKE and it decreases with increasing mass of the fissioning nucleus. The global even-odd effect in total average prompt emission quantities is decreasing with increasing mass of the fissioning nucleus. In the case of an even-odd fissioning nucleus, 234U(n,f), the global even-odd effect in prompt emission quantities exhibits a very slow variation with the incident neutron energy.
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