On current ambiguity in the interpretation of fission at intermediate excitation energy

Abstract : Various approaches are currently used to interpret experimental data on fission. We critically examine a wide set of observables measured for fission $^{206,210}$Po nuclei at medium excitation energy, and illustrate the ambiguity in current analysis. Dynamical calculations based on the four-dimensional Langevin equation using a macroscopic potential energy landscape are performed, and found to consistently describe available measurements. This observation calls into question the robustness of recent analysis based on statistical-model calculations and concluding, on the contrary, to substantial shell effects at the fission saddle point $^{206-210}$Po. The inconsistency in interpretation reached by the two approaches shows that, depending on the system, the conclusion can be strongly model-dependent. Although this may not be surprising, it emphasizes the today still limited reliability of firmly extracting fundamental nuclear properties from customary analysis.
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Physics Letters B, Elsevier, 2014, 737, pp.289-292. 〈10.1016/j.physletb.2014.08.072〉
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Contributeur : Michel Lion <>
Soumis le : jeudi 9 octobre 2014 - 16:59:11
Dernière modification le : jeudi 1 février 2018 - 01:26:59

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C. Schmitt, K. Mazurek, P.N. Nadtochy. On current ambiguity in the interpretation of fission at intermediate excitation energy. Physics Letters B, Elsevier, 2014, 737, pp.289-292. 〈10.1016/j.physletb.2014.08.072〉. 〈in2p3-01073430〉

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