Double beta decay of 96Zr

被引：87

作者：

Arnold, R

Augier, C

Baker, J

Barabash, A

Blum, D

Brudanin, V

Caffrey, AJ

Campagne, JE

Caurier, E

Dassié, D

Egorov, V

Filipova, T

Gurriaran, R

Guyonnet, JL

Hubert, F

Hubert, P

Jullian, S

Kisel, I

Kochetov, O

Kornoukhov, VN

Kovalenko, V

Lalanne, D

Laplanche, F

Leccia, F

Linck, I

Longuemare, C

Marquet, C

Mauger, F

Nicholson, HW

Pilugrin, I

Piquemal, F

Reyss, JL

Sarazin, X

Scheibling, F

Suhonen, J

Sutton, CS

Szklarz, G

Timkin, V

Torres, R

Tretyak, VI

Umatov, V

Vanyushin, I

Vareille, A

Vasilyev, Y

Vylov, T

机构：

[1] IN2P3, CENBG, F-33170 Gradignan, France

[2] Univ Bordeaux, F-33170 Gradignan, France

[3] IN2P3, LPC, CNRS, F-14032 Caen, France

[4] Univ Caen, F-14032 Caen, France

[5] Joint Inst Nucl Res, Dubna 141980, Russia

[6] CFR, CNRS, F-91190 Gif Sur Yvette, France

[7] Idaho Natl Engn Lab, Idaho Falls, ID 83415 USA

[8] Univ Jyvaskyla, SF-40351 Jyvaskyla, Finland

[9] INR, UA-252028 Kiev, Ukraine

[10] IN2P3, LAL, CNRS, F-91405 Orsay, France

[11] Univ Paris Sud, F-91405 Orsay, France

[12] MHC, S Hadley, MA 01075 USA

[13] Univ Strasbourg 1, IReS, IN2P3, CNRS, F-67037 Strasbourg, France

[14] Inst Theoret & Expt Phys, Moscow 117259, Russia

来源：

NUCLEAR PHYSICS A | 1999年 / 658卷 / 04期

基金：

俄罗斯基础研究基金会; 美国国家科学基金会;

关键词：

RADIOACTIVITY Zr-96(2 beta); measured 2 nu associated 2 beta decay T-1/2; 0 nu associated 2 beta decay T-1/2 lower limits;

D O I：

10.1016/S0375-9474(99)00374-7

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：

After 10357 h of running the NEMO-2 tracking detector with an isotopically enriched zirconium source (0.084 mol yr of Zr-96), a beta beta 2v decay half-life of T-1/2 = (2.1(+0.4(stat))(-0.8(stat)) +/- 0.2(syst)) . 10(19) y was measured. Limits with a 90% C.L. on the Zr-96 half-lives of 1.0 . 10(21) y for beta beta 0v decay to the ground state, 3.9 . 10(20) y to the 2(+) excited state and 3.5 . 10(20) y for beta beta 0 nu chi(0) decay with a Majoron(chi(0)) were obtained. The data also provide direct limits at the 90% C.L. for the Zr-94 half-lives. These limits are 1.1 . 10(17) y for beta beta 2v decay to the ground state, 1.9 . 10(19) y for beta beta 0v decay to the ground state and 2.3 . 10(18) y for beta beta 0 nu chi(0) decay to ground state. (C) 1999 Published by Elsevier Science B.V. All rights reserved.

引用

页码：299 / 312

页数：14

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