Author/Authors :
P. Belli، نويسنده , , R. Bernabei، نويسنده , , R.S. Boiko، نويسنده , , F. Cappella، نويسنده , , R. Cerulli، نويسنده , , F.A. Danevich، نويسنده , , S. dʹAngelo، نويسنده , , A. Incicchitti، نويسنده , , V.V. Kobychev، نويسنده , , B.N. Kropivyansky، نويسنده , , M. Laubenstein، نويسنده , , P.G. Nagornyi، نويسنده , , S.S. Nagorny، نويسنده , , S. Nisi، نويسنده , , F. Nozzoli، نويسنده , , D.V. Poda، نويسنده , , D. Prosperi، نويسنده , , O.G. Polischuk، نويسنده , , V.I. Tretya، نويسنده ,
Abstract :
A sample of 100MoO3 powder with molybdenum enriched in 100Mo to 99.5% and mass of 1199 g was measured for 18120 h in a low-background set-up with 4 HP Ge detectors (image volume each one) deep underground (3600 m w.e.) at the Laboratori Nazionali del Gran Sasso of the INFN (Italy). The two γ quanta of 540 keV and of 591 keV emitted in the deexcitation process after a image decay of 100Mo to the image excited level of 100Ru (image) are observed in the accumulated data both in coincidence and in the 1-dimensional sum spectrum. The measured half life is: image, well in agreement with positive results obtained in previous experiments. Moreover, the limit on charge non-conserving β decay of 100Mo is also set: image at 90% C.L.; it corresponds to the limit on CNC admixture in weak currents: image.
Keywords :
100Mo(2??) , RADIOACTIVITY , I?I? , E?E? , 100Mo(2??) , T1/2T1/2 for 2? -accompanied 2??2??-decay to first 0+ excited level , deduced , T1/2T1/2 lower limit for charge non-conserving ?-decay , Enriched sample MoO?3 with HPGe detectors at the Gran Sasso National Laboratory underground facility , ??-coin , measured
