Double-beta decay of 48Ca in the TGV experiment

被引：1
|
作者：
Brudanin, VB [1 ]
Rukhadze, NI
Briançon, C
Egorov, VG
Kovalenko, VE
Kovalik, A
Salamatin, AV
Tsoupko-Sitnikov, VV
Vylov, T
Stekl, I
机构：
[1] Joint Inst Nucl Res, Dubna 141980, Moscow Oblast, Russia
[2] Ctr Spectrometrie Nucl & Spectrometrie Masse, F-91405 Orsay, France
[3] Czech Tech Univ, Fac Nucl Sci & Phys Engn, CZ-11519 Prague, Czech Republic
来源：
PHYSICS OF ATOMIC NUCLEI | 2000年 / 63卷 / 07期
基金：
俄罗斯基础研究基金会;
关键词：
D O I：
10.1134/1.855772
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：
The low-background, high-sensitivity Ge multidetector spectrometer TGV is used to study the double-beta decay of Ca-48. Additional suppression of the recorded background is achieved with neutron shielding and a method for distinguishing beta particles from gamma rays by detector-pulse rise time. The estimates T-1/2(beta beta 2 nu) (4.2 +/- 2.4) x 10(19) yr and T-1/2(beta beta 0 nu) > 1.5 x 10(21) yr (at a 90% C.L.) for the double-beta decay of Ca-48 are obtained. (C) 2000 MAIK "Nauka/Interperiodica ".
引用
收藏
页码：1218 / 1221
页数：4
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