DECAY PROPERTIES AND STABILITY OF HEAVIEST ELEMENTS

被引：96

作者：

Karpov, A. V. ^{[1
]}

Zagrebaev, V. I. ^{[1
]}

Palenzuela, Y. Martinez ^{[2
]}

Ruiz, L. Felipe ^{[2
]}

Greiner, Walter ^{[2
]}

机构：

[1] JINR, Flerov Lab Nucl React, Dubna 141980, Russia

[2] Goethe Univ Frankfurt, Frankfurt Inst Adv Studies, D-60438 Frankfurt, Germany

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS E | 2012年 / 21卷 / 02期

关键词：

Superheavy nuclei; decay modes; half-lives; alpha-decay; beta-decay; spontaneous fission; FISSION HALF-LIVES; SUPERHEAVY NUCLEI; HEAVY; BETA; DEFORMATION; PREDICTIONS; SYSTEMATICS; BARRIERS; ENERGY; MASSES;

D O I：

10.1142/S0218301312500139

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：

Deca properties and stability of heaviest nuclei with Z <= 132 are studied within the macro-microscopical approach for nuclear ground state masses and phenomenological relations for the half-lives with respect to alpha-decay, beta-decay and spontaneous fission. We found that at existing experimental facilities the synthesis and detection of nuclei with Z > 120 produced in fusion reactions may be difficult due to their short half-lives (shorter than 1 mu s). The nearest (more neutron-rich) isotopes of superheavy elements with 111 <= Z <= 115 to those synthesized recently in Dubna in Ca-48-induced fusion reactions are found to be beta(+)-decaying. This fact may significantly complicate their experimental identification. However it gives a chance to synthesize in fusion reactions the most stable superheavy nuclei located at the center of the island of stability. Our calculations yield that the beta-stable isotopes (291)Cn and (293)Cn with a half-life of about 100 years are the longest-living superheavy nuclei located at the island of stability.

引用

页数：20

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