THE RESEARCH OF 2-BETA DECAY OF CD-116 WITH ENRICHED (CDWO4)-CD-116 CRYSTAL SCINTILLATORS

被引：135

作者：

DANEVICH, FA

GEORGADZE, AS

KOBYCHEV, VV

KROPIVYANSKY, BN

KUTS, VN

NIKOLAIKO, AS

TRETYAK, VI

ZDESENKO, Y

机构：

[1] Institute for Nuclear Research, the Ukrainian National Academy of Sciences

来源：

PHYSICS LETTERS B | 1995年 / 344卷 / 1-4期

关键词：

D O I：

10.1016/0370-2693(94)01528-K

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The experiment was performed at the Solotvina Underground Laboratory with CdWO4 crystal scintillators enriched in Cd-116 to 83%. The total data collection time was about 30000 hours. Limits of T-1/2(0v) greater than or equal to 2.9.10(22) y (90% CL) and T-1/2(2v) greater than or equal to 1.8.10(19) y (99% CL) were obtained for 0v2 beta and 2v2 beta decay of Cd-116. After subtraction of the spectrum obtained with a natural CdWO4 scintillator a remaining yield was seen consistent with 2v2 beta decay of Cd-116 with T-1/2(2v) = {2.7(-0.4)(+0.5) (stat.)(-0.6)(+0.9)(syst.)}.10(19) y. However, the imitation of the effect by impurities of Sr-90 (at the level of 2.10(-3) Bq/kg) cannot be excluded.

引用

页码：72 / 78

页数：7

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