Quest for double beta decay of Gd-160 and Ce isotopes

Authors
Danevich, FA Kobychev, VV Ponkratenko, OA Tretyak, VI Zdesenko, GY
Citation
Fa. Danevich et al., Quest for double beta decay of Gd-160 and Ce isotopes, NUCL PHYS A, 694(1-2), 2001, pp. 375-391
Citations number
60
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
NUCLEAR PHYSICS A
ISSN journal
0375-9474 → ACNP
Volume
694
Issue
1-2
Year of publication
2001
Pages
375 - 391
Database
ISI
SICI code
0375-9474(20011105)694:1-2<375:QFDBDO>2.0.ZU;2-A
Abstract
The 2 beta decay study of Gd-160 has been performed in the Solotvina Underg round Laboratory with the help of Gd2SiO5:Ce crystal scintillator (volume 9 5 cm(3)). The background of the detector in the vicinity of the Q(beta beta ) energy of Gd-160 was reduced to 1.0 cpd/(keV kg). The new improved half-l ife Emits have been established for 0 upsilon2 beta decay of Gd-160 to the ground (0(+)) and first excited (2(+)) levels of Dy-160: T-1/2(0 upsilon) g reater than or equal to 2.3(1.3) X 10(21) yr at 68%(90%) C.L. The T-1/2 bou nds have been also set for 2 upsilon, O upsilon (X) and O upsilon (XX) mode s of Gd-160 decay, as well as for different 20 decay processes in Ce-136, C e-138 and Ce-142. (C) 2001 Elsevier Science B.V. All rights reserved.