Search for double beta decay of Ca-48 in the TGV experiment

Authors
Brudanin, VB Rukhadze, NI Briancon, C Egorov, VG Kovalenko, VE Kovalik, A Salamatin, AV Stekl, I Tsoupko-Sitnikov, VV Vylov, T Cermak, P
Citation
Vb. Brudanin et al., Search for double beta decay of Ca-48 in the TGV experiment, PHYS LETT B, 495(1-2), 2000, pp. 63-68
Citations number
13
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS B
ISSN journal
03702693 → ACNP
Volume
495
Issue
1-2
Year of publication
2000
Pages
63 - 68
Database
ISI
SICI code
0370-2693(200012)495:1-2<63:SFDBDO>2.0.ZU;2-L
Abstract
This Letter describes a collaborative TGV (Telescope Germanium Vertical) st udy of the double beta decay of Ca-48 with a low-background and high sensit ivity Ge multi-detector spectrometer. The results of T-1/2(2 nu beta beta) = (4.2(-1.3)(+3.3)) x 10(19) years and T-1/2(0 nu beta beta) > 1.5 x 10(21) years (90% CL) for double beta decay of Ca-48 were found after processing experimental data obtained after 8700 hours of measuring time, using approx imately 1 gramme of Ca-48. The features of a TGV-2 experiment are also pres ented. (C) 2000 Elsevier Science B.V. All rights reserved.