Search for double beta decay of 48Ca in the TGV experiment

被引：66

作者：

Brudanin, VB

Rukhadze, NI ^{[1
]}

Briançon, C

Egorov, VG

Kovalenko, VE

Kovalik, A

Salamatin, AV

Stekl, I

Tsoupko-Sitnikov, VV

Vylov, T

Cermák, P

机构：

[1] Joint Inst Nucl Res, Dubna 141980, Moscow Region, Russia

[2] Ctr Spectrometrie Nucl & Spectrometrie Masse, Orsay, France

[3] Czech Tech Univ, Fac Nucl Sci & Phys Engn, CR-11519 Prague, Czech Republic

来源：

PHYSICS LETTERS B | 2000年 / 495卷 / 1-2期

基金：

俄罗斯基础研究基金会;

关键词：

double beta decay; Ca-48;

D O I：

10.1016/S0370-2693(00)01244-2

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

This Letter describes a collaborative TGV (Telescope Germanium Vertical) study of the double beta decay of Ca-48 with a low-background and high sensitivity Ge multi-detector spectrometer. The results of T-1/2(2 nu beta beta) = (4.2(-1.3)(+3.3)) x 10(19) years and T-1/2(0 nu beta beta) > 1.5 x 10(21) years (90% CL) for double beta decay of Ca-48 were found after processing experimental data obtained after 8700 hours of measuring time, using approximately 1 gramme of Ca-48. The features of a TGV-2 experiment are also presented. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：63 / 68

页数：6

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