Double beta decay of Ca-48

被引：111

作者：

Balysh, A

DeSilva, A

Lebedev, VI

Lou, K

Moe, MK

Nelson, MA

Piepke, A

Pronskiy, A

Vient, MA

Vogel, P

机构：

[1] UNIV CALIF IRVINE,DEPT PHYS & ASTRON,IRVINE,CA 92697

[2] CALTECH,DEPT PHYS,PASADENA,CA 91125

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 77卷 / 26期

关键词：

D O I：

10.1103/PhysRevLett.77.5186

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Ca-48, the lightest experimentally accessible double beta decay candidate, is the only one simple enough to be treated exacly in the nuclear shell model. Thus the beta beta(2v) half-life measurement, reported here, provides a unique test of the nuclear physics involved in the beta beta matrix element calculation. Enriched Ca-48 sources of two different thicknesses have been exposed in a time projection chamber. We observe a half-life of T-1/2(2v)=(4.3(-1.1)(+2.4)[stat]+/-[syst])x10(19) yr, consistent with shell model calculations.

引用

页码：5186 / 5189

页数：4

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