HALF-LIFE MEASUREMENT FOR (ND)-N-150 2-BETA-2-NU DECAY IN THE TIME PROJECTION CHAMBER EXPERIMENT

被引：45

作者：

ARTEMIEV, V

BRAKCHMAN, E

KARELIN, A

KIRICHENKO, V

KLIMENKO, A

KOZODAEVA, O

LUBIMOV, V

MITIN, A

OSETROV, S

PARAMOKHIN, V

POMANSKY, A

SMOLNIKOV, A

TSVETKOVA, T

VASILYEV, S

ZELDOVICH, O

机构：

[1] INST THEORET & EXPTL PHYS,MOSCOW 117259,RUSSIA

[2] RUSSIAN ACAD SCI,INST NUCL RES,MOSCOW 117312,RUSSIA

来源：

PHYSICS LETTERS B | 1995年 / 345卷 / 04期

关键词：

NEUTRINOLESS DOUBLE BETA DECAY; ISOTOPE; TPC; ENRICHMENT;

D O I：

10.1016/0370-2693(94)01609-G

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We obtain a positive effect in the experiment to search for two-neutrino beta beta decay of Nd-150 by using the Time Projection Chamber. The half-life T-1/2(2 beta 2 nu)=[1.88(-0.39)(+0.66) (stat.)+/-0.19 (syst.)]X10(19) yr is defined from the analysis of the data accumulated with samples of Nd-150 (92% enrichment) and Nd-nat (the natural isotopic abundance is 5.6%). The effect to the background ratio is equal to 4/1. The background from radioactive impurities in the sources is estimated experimentally in a special series of measurements.

引用

页码：564 / 568

页数：5

共 9 条

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