Double-beta decay of 150Nd and 76Ge to excited states

被引：14
|
作者：
Klimenko, AA [1 ]
Osetrov, SB
Smolnikov, AA
Vasiliev, SI
机构：
[1] Joint Inst Nucl Res, Dubna 141980, Russia
[2] Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia
来源：
CZECHOSLOVAK JOURNAL OF PHYSICS | 2002年 / 52卷 / 04期
关键词：
double-beta decay; germanium detector; nuclear matrix elements;
D O I：
10.1023/A:1015325830650
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
New results of experimental search for double beta decay of Ge-76 (2nubetabeta) and Nd-150 (0nu + 2nu) to excited states of the daughter nuclei are presented. Data from 228 days of measurements performed with four HPGe detectors in the low background laboratory of Baksan neutrino observatory yield new limits on life-times T-1/2(0(+) --> 0(1)(+)) greater than or equal to 6.2 x 10(21) yr at 90 % C.L. for transition of Ge-76 to 0(1)(+) level of Se-76 and T-1/2(0(+) --> 0(1)(+)) greater than or equal to 1.5 x 10(20) yr at 90 % C.L. for transition of Nd-150 to 0(1)(+) level of Sm-150.
引用
收藏
页码：589 / 596
页数：8
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