Nuclear shell effect and collinear tripartition of nuclei

Pramana

Wolfram von Oertzen3²  Avazbek K Nasirov1 2³  Rustam B Tashkhodjaev2¹ 

[1] Institute of Nuclear Physics, Uzbek Academy of Science, 100214 Tashkent, Uzbekistan$$;Helmholtz-Zentrum Berlin, Glienickerstr. 100, 14109 Berlin, Germany$$;Joint Institute for Nuclear Research, 141980 Dubna, Moscow Region, Russia$$

关键词: Fission;    potential energy surface;    ternary fission;    cluster models;    spontaneous fission.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

A possibility for the formation of three reaction products having comparable masses at the spontaneous fission of 252Cf is theoretically explored. This work is aimed to study the mechanism leading to the observation of the reaction products with masses $M_{1}$ = 136–140 and $M_{2}$ = 68–72 in coincidence with the FOBOS group in JINR. The same type of ternary fission decay has been observed in the 235U(nth, fff) reaction. The potential energy surface (PES) for the ternary system forming a collinear nuclear chain is calculated for a wide range of masses and charge numbers of the constituent nuclei. The results of the PES for the tripartition of 252Cf(sf, fff) allows us to establish dynamical conditions leading to the formation of fragments with mass combinations of clusters 68−70Ni with 130−132Sn and with the missing cluster 48−52Ca.

【 授权许可】

Unknown