Role of the shell and pairing effects in nuclear fission

Krzysztof Pomorski, Bożena Nerlo-Pomorska

Abstract


The description of spontaneous fission of actinides by the macroscopic-microscopic method consisting of the Lublin Strasbourg Drop model and the two deformed Nilsson wells or the Yukawa folded single-particle potential is presented. The microscopic shell corrections are obtained by the Strutinsky method, while the pairing correlations are taken into account within the BCS theory. It was shown that the pairing strength should grow with increasing deformation of fissioning nucleus in order to obtain right estimates of the pairing field in the fission fragments. The fission barrier heights are estimated using the topographical theorem of Swiatecki.

Keywords


nuclear fission; scission point; barrier heights; shell and pairing effects

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References


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DOI: http://dx.doi.org/10.17951/aaa.2015.70.%25p
Date of publication: 2016-04-29 12:28:28
Date of submission: 2016-01-15 16:21:21


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