Cluster decay of $^{112−122}$Ba isotopes from ground state and as an excited compound system

Pramana

Subha P V¹  Santhosh K P1¹  Priyanka B¹ 

[1] School of Pure and Applied Physics, Kannur University, Swami Anandatheertha Campus, Payyanur 670 327, India$$

关键词: Cluster decay;    alpha decay.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

The decay properties of various even-even isotopes of barium in the range $112 le A le 122$ is studied by modifying the Coulomb and proximity potential model for both the ground and excited state decays, using recent mass tables. Most of the values predicted for ground state decays are within the experimental limit for measurements $(T_{1/2}$less than $10^{30}$s). The minimum $T_{1/2}$ value refers to doubly magic or nearly doubly magic Sn $(Z = 50)$ as the daughter nuclei. A comparison of log$_{10}(T_{1/2})$ value reveals that the exotic cluster decay process slows down due to the presence of excess neutrons in the parent nuclei. The half-lives are also computed using the Universal formulafor cluster decay (UNIV) of Poenaru et al and the Universal decay law (UDL) of Qi et al, and are compared with CPPM values and found to be in good agreement. A comparison of half-life for ground and excited systems reveals that probability of decay increases with a rise in temperature or otherwise, inclusion of excitation energy decreases the $T_{1/2}$ values.

【 授权许可】

Unknown