THE XE-136 DOUBLE-BETA-DECAY TRACK EXPERIMENT

被引：15

作者：

ARTEMIEV, VA

BRAKCHMAN, EV

IVANOVSKY, MA

KARELIN, AK

KIRICHENKO, VV

KNYAZEV, VM

KOZODAEVA, OM

LUBIMOV, VA

MITIN, AI

NIKOLAEV, VP

TSVETKOVA, TN

ZELDOVICH, OY

机构：

[1] Institute of Theoretical and Experimental Physics, Moscow

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1991年 / 303卷 / 02期

关键词：

D O I：

10.1016/0168-9002(91)90797-T

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A detector for studying the Xe-136 2-beta-decay with a proportional drift chamber of volume V = 13 m3 and operating with 10 kg of Xe-136 is considered. A limit of T1/2(2-beta-0-nu) > 10(23) yr can be reached at the sea level. The investigation of background with a prototype (size (1.0 x 0.8 x 0.4) m3 and Xe-136 mass 0.5 kg) showed that the track information allows a high background-rejection coefficient (> 10(6)). The technique proposed in this article allows the defining of the admixture of Rn-222 in the working gas at a level of 10(-20)-10(-21) atom/atom. A half-life limit of T1/2(2-beta-2-nu) > 2 x 10(19) yr (90% CL) was obtained.

引用

页码：309 / 322

页数：14