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

Authors
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
Citation
V. Artemiev et al., HALF-LIFE MEASUREMENT FOR (ND)-N-150 2-BETA-2-NU DECAY IN THE TIME PROJECTION CHAMBER EXPERIMENT, Physics letters. Section B, 345(4), 1995, pp. 564-568
Citations number
9
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
345
Issue
4
Year of publication
1995
Pages
564 - 568
Database
ISI
SICI code
0370-2693(1995)345:4<564:HMF(2D>2.0.ZU;2-X
Abstract
We obtain a positive effect in the experiment to search for two-neutri no 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 wit h 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 estimat ed experimentally in a special series of measurements.