تقرير
Peculiarities of clusters formation in true ternary fission of $^{252}$Cf and $^{236}$U$^*$
| العنوان: | Peculiarities of clusters formation in true ternary fission of $^{252}$Cf and $^{236}$U$^*$ |
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| المؤلفون: | Nasirov, A. K., von Oertzen, W., Muminov, A. I., Tashkhodjaev, R. B. |
| سنة النشر: | 2013 |
| المجموعة: | Nuclear Theory |
| مصطلحات موضوعية: | Nuclear Theory |
| الوصف: | The existence of a new type of cluster decay called "collinear cluster tri-partition" (CCT) is discussed by an analysis of the landscape of the potential energy surface (PES). The total energy of the ternary system is found as a sum the binding energies of fragments and nucleus-nucleus interaction between them. The pre-scission state of the ternary system is assumed to be arranged as a chain of the three fragments along a straight line. Minima and valleys of the PES are determined by variation of the proton and neutron distributions between them. Pre-scission prompt emission of neutrons is assumed and PES is calculated for the cases of emission of 2---4 neutrons. The presence of the valley corresponding to the formation of the isotopes of Sn with masses $A$=130---136 is inherent for all PES calculated for CCT for spontaneous fission of $^{252}$Cf and fission induced by neutrons of $^{235}$U. There are local minima indicating the formation of Ca, Fe, Ni, Ge and Se isotopes having magic proton or/and neutron numbers, such as 20, 28, and 50. The analysis shows that the experimentally observed $^{68}$Ni is formed as the edge fragment of the ternary system connecting to Sn by Si and Ca isotopes at fission of $^{236}$U and $^{252}$Cf, respectively. Comment: 13 pages, 6 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1088/0031-8949/89/5/054022 |
| URL الوصول: | http://arxiv.org/abs/1312.2189 |
| رقم الأكسشن: | edsarx.1312.2189 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1088/0031-8949/89/5/054022 |
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