ABSOLUTE ALPHA-DECAY WIDTH OF PO-212 IN A COMBINED SHELL AND CLUSTER MODEL

被引：242

作者：

VARGA, K ^{[1
]}

LOVAS, RG ^{[1
]}

LIOTTA, RJ ^{[1
]}

机构：

[1] MANNE SIEGBAHN INST PHYS,S-10405 STOCKHOLM,SWEDEN

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 69卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.69.37

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We give a parameter-free microscopic description of the alpha-decay of the ground state of Po-212 by expanding the parent wave function over a basis containing shell-model- as well as cluster-model-type elements. The resulting decay width agrees with experiment well within the range of the uncertainty inherent in the input of the model. The amount of core+alpha clustering in the parent state is found much higher (30%) than former microscopic estimates (approximately 1%), which shows the soundness of assuming the existence of preformed alpha-particles with appreciable probability in the initial state.

引用

页码：37 / 40

页数：4

共 23 条

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