CONFIRMATION OF THE OBSERVATION OF 2-NU BETA-BETA DECAY OF GE-76

被引：114
|
作者：
AVIGNONE, FT
BRODZINSKI, RL
GUERARD, CK
KIRPICHNIKOV, IV
MILEY, HS
POGOSOV, VS
REEVES, JH
STAROSTIN, AS
TAMANYAN, AG
机构：
[1] PACIFIC NW LAB, RICHLAND, WA 99352 USA
[2] MOSCOW THEORET & EXPTL PHYS INST, MOSCOW 117259, USSR
[3] YEREVAN PHYS INST, YEREVAN 375036, ARMENIA, USSR
来源：
PHYSICS LETTERS B | 1991年 / 256卷 / 3-4期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1016/0370-2693(91)91810-I
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Two previous independent reports of 2-nu-beta-beta-decay by the ITEP-YPI Collaboration, T1/2(2-nu) = (9 +/- 1) X 10(20) yr (1-sigma), and the PNL-USC Collaboration, T1/2(2-nu) = (1.12(-0.26)+0.48) X 10(21) yr (2-sigma), are confirmed. A 0.25 kg Ge(Li) detector, isotopically enriched to 85% in Ge-75, was operated in the PNL-USC ultralow-background facility in the Homestake gold mine. Following a single correction to the data, a spectrum resembling that observed in the earlier PNL-USC experiment, with about the same intensity per Ge-76 atom per year, was observed. The measured half-life is T1/2(2-nu) = (9.2(-0.4)+0.7) X 10(20) yr (2-sigma).
引用
收藏
页码：559 / 561
页数：3
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