Two-neutrino 2β decay of 116Cd and new half-life limits on 2β decay of 180W and 186W

被引：15
|
作者：
Danevich, FA
Georgadze, AS
Kobychev, VV
Nikolaiko, AS
Ponkratenko, OA
Tretyak, VI
Zdesenko, SY
Zdesenko, YG [1 ]
Bizzeti, PG
Fazzini, TF
Maurenzig, PR
机构：
[1] Inst Nucl Res, MSP, UA-03680 Kiev, Ukraine
[2] Univ Florence, Dipartimento Fis, I-50019 Florence, Italy
[3] Ist Nazl Fis Nucl, I-50019 Florence, Italy
来源：
NUCLEAR PHYSICS A | 2003年 / 717卷 / 1-2期
关键词：
double beta decay; Cd-116; W-180; W-186; CdWO4 crystal scintillators;
D O I：
10.1016/S0375-9474(03)00613-4
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：
Studies of the 2beta decay of Cd-116, W-180 and W-186 have been performed in the Solotvina Underground Laboratory with the help of the super-low background (CdWO4)-Cd-116 crystal scintillators. The half-life value of the two-neutrino 2,6 decay of I I 6Cd has been revised as T-1/2(2v) = 2.9 +/- 0.1 (stat) (+0.4)(-0.3)(syst) X 10(19) yr. Besides, the new half-live limits on different modes of this process have been established for two natural tungsten isotopes, in particular, T-1/2 greater than or equal to 1.0 (1.6) x 10(21) yr at 90% (68%) C.L. for the neutrinoless 2beta decay of W-186 to the ground (0(+)) and first excited (2(+)) level of Os-186. (C) 2003 Elsevier Science B.V. All rights reserved.
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页码：129 / 145
页数：17
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