Alpha decay chains from superheavy nuclei

被引：13

作者：

Samanta, C. ^{[1
,2
,3
]}

机构：

[1] Univ Richmond, Dept Phys, Richmond, VA 23173 USA

[2] Saha Inst Nucl Phys, Kolkata 700064, India

[3] Virginia Commonwealth Univ, Dept Phys, Richmond, VA 23284 USA

来源：

PROGRESS IN PARTICLE AND NUCLEAR PHYSICS, VOL 62, NO 2 | 2009年 / 62卷 / 02期

关键词：

SHE; alpha-decay; Half life; Fission; WKB; DDM3Y; HALF-LIVES; HEAVY; ELEMENTS; DISCOVERY; STABILITY; SEARCH;

D O I：

10.1016/j.ppnp.2008.12.013

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Magic islands for extra-stable nuclei in the midst of the sea of fission-instability were predicted to be around Z = 114,124 or, 126 with N = 184, and Z = 120, with N = 172. Whether these fission-survived superheavy nuclei with high Z and N would live long enough for detection or, undergo alpha-decay in a very short time, remains an open question. alpha-decay half lives of nuclei with 130 >= Z >= 100 have been calculated in a WKB framework using density-dependent M3Y interaction with Q-values from different mass formulae. The results are in excellent agreement with the experimental data. Fission survived Sg nuclei with Z = 106, N = 162 is predicted to have the highest alpha-decay half life (similar to 3.2 h) in the Z = 106-108, N = 160-164 region called small island/peninsula. Superheavy nuclei with Z > 118 are found to have alpha-decay half lives of the order of microseconds or less. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：344 / 348

页数：5

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