Observation of two neutrino double beta decay of 116Cd with the tracking detector NEMO-2
Arnold R., Augier C. , Barabash A. S. , Blum D. , Brudanin V. , Campagne J. E. , Caurier E. , Dassie D. , Egorov V., Eschbach R. , Guyonnet J. L , Hubert F., Hubert Ph., Jullian S. , Kochetov O., Kornoukhov V. N., Kovalenko V., Lalanne D. , Laplanche F. , Leccia F. , Lepikhin Yu. B. , Linck I., Longuemare C., Mauger F., Mennrath P. , Nicholson H. W., Nozdrin A. , Piquemal F., Scheibling F. , Button C. S. , Szklarz G. , Tretyak V. I. , Umatov V. I., Vanushin I. A., Vareille A. , Vassilyev Yu. , Vylov Ts. , Zerkin V.
The two neutrino double beta decay of 116Cd has been detected using a 152-g source of enriched cadmium. A signal-to-background ratio of 2.8 was achieved in a 2460-h run with the NEMO-2 detector. The corresponding half-life is 7^ = [3.6i^$±0.3(syst)]X1019y. © 1995 American Institute of Physics.