Open AccessSearch for triple and quadruple beta decay of 150Nd using low-background HPGe detector
Author(s) -
A. S. Barabash,
Ph. Hubert,
A. Nachab,
V. I. Umatov
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1468/1/012106
Subject(s) - excited state , physics , ground state , beta decay , atomic physics , analytical chemistry (journal) , chemistry , chromatography
Triple beta decay of 150 Nd to the ground and excited states of 150 Eu and quadruple beta decay of 150 Nd to the excited states of 150 Gd have been studied using a 400 cm 3 low-background HPGe detector. A half-life limit for the quadruple beta decay to the 0 1 + state of 150 Gd was found to be T 1/2 (0 v + 4 v ) > 8.7 × 10 20 yr (90% C.L.). For other (0 v +4 v ) transitions to the excited states limits for the first time have been obtained at the level of (6.1 − 9.5) × 10 20 yr (90% C.L.). We report here also the results for the first search for triple beta decay to the ground and excited final states of 150 Eu, T 1/2 (0 v + 3 v ) > (0.04 − 4.8) × 10 20 yr (90% C.L.).