Author/Authors :
V.B. Brudanin، نويسنده , , N.I. Rukhadze، نويسنده , , Ch. Briançon، نويسنده , , V.G. Egorov، نويسنده , , V.E. Kovalenko، نويسنده , , O. Kazachenko and A. Kovalik، نويسنده , , A.V. Salamatin، نويسنده , , I. ?tekl، نويسنده , , V.V. Tsoupko-Sitnikov، نويسنده , , Ts. Vylov، نويسنده , , P. ?erm?k، نويسنده ,
Abstract :
This Letter describes a collaborative TGV (Telescope Germanium Vertical) study of the double beta decay of 48Ca with a low-background and high sensitivity Ge multi-detector spectrometer. The results of T1/22νββ=(4.2+3.3−1.3)×1019 years and T1/20νββ>1.5×1021 years (90% CL) for double beta decay of 48Ca were found after processing experimental data obtained after 8700 hours of measuring time, using approximately 1 gramme of 48Ca. The features of a TGV-2 experiment are also presented.
