Studies on heavy particle radioactivity from superheavy nuclei leading to doubly magic 304120 daughter nuclei

被引：15

作者：

Santhosh, K. P. ^{[1
]}

Sukumaran, Indu ^{[1
]}

机构：

[1] Kannur Univ, Sch Pure & Appl Phys, Swami Anandatheertha Campus, Payyanur 67032, Kerala, India

来源：

CANADIAN JOURNAL OF PHYSICS | 2017年 / 95卷 / 01期

关键词：

heavy particle radioactivity; alpha decay; superheavy nuclei; ALPHA-DECAY; CLUSTER RADIOACTIVITY; SPONTANEOUS EMISSION; EXOTIC DECAY; GSI-SHIP; ISOTOPES; ELEMENTS; DEFORMATIONS; VALLEYS; REGION;

D O I：

10.1139/cjp-2016-0465

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The alpha decay and heavy particle radioactivity of the isotopes of even-even superheavy nuclei with Z = 122-132 have been studied within Coulomb and proximity potential model. The predicted half-lives using our model are found to be in agreement with universal formula for cluster decay of Poenaru et al., the universal decay law of Qi et al., and the scaling law of Horoi et al., and most of the estimated values are well within the experimental upper limit (T-1/2 < 10(30) s). Our work targets the shell closure properties in the superheavy region. From the plots for log(10)(T-1/2) against the neutron number of the daughter nuclei, three prominent minima are observed at N = 178, 184, and 194. The results show that in addition to N = 184, the neutron numbers N = 178 and 194 exhibit extra stability as compared to their neighbours. Based on these important observations, we have identified the possibility of N = 194 being a magic neutron number next to N = 184. Further, a new island of stability in the superheavy region has been predicted around the doubly magic (304)120 superheavy nuclei and thus established the role of neutron shell closure in heavy particle decays very well.

引用

页码：31 / 37

页数：7

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