Towards a background-free double-beta decay experiment using the EDELWEISS cryogenic Ge detectors

被引：4
|
作者：
Chardin, G
Broniatowski, A
Deschamps, H
Jin, Y
Fesquet, M
机构：
[1] CEA Saclay, DAPNIA, DSM, F-91191 Gif Sur Yvette, France
[2] Ctr Spectrometrie Nucl & Spectrometrie Masse, F-91405 Orsay, France
[3] CNRS, LPN, F-91460 Marcoussis, France
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2004年 / 520卷 / 1-3期
关键词：
germanium detector; double beta decay; neutrino mass; pulse-shape analysis;
D O I：
10.1016/j.nima.2003.11.278
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The present generation of double-beta experiments is limited by two main backgrounds: surface alpha interactions and Compton interactions from high-energy gamma-ray lines. Using the detector developments realized for the EDELWEISS Dark Matter experiment, we propose a strategy to eliminate completely the alpha radioactivity background and to reduce by nearly-two orders of magnitude the Compton background. This would lead to a nearly background-free experiment, and an effective neutrino mass sensitivity of 15 meV achieved in 5 years with a one-ton array of ionisation-heat Ge-76 detectors. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码：145 / 147
页数：3
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