1. New observation of decay of 100Mo to the level of 100Ru in the ARMONIA experiment
- Author
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Belli, P., Bernabei, R., Boiko, R.S., Cappella, F., Cerulli, R., Danevich, F.A., d'Angelo, S., Incicchitti, A., Kobychev, V.V., Kropivyansky, B.N., Laubenstein, M., Nagornyi, P.G., Nagorny, S.S., Nisi, S., Nozzoli, F., Poda, D.V., Prosperi, D., Polischuk, O.G., Tretyak, V.I., and Vyshnevskyi, I.M.
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MOLYBDENUM isotopes , *GERMANIUM diodes , *PHYSICS laboratories , *NUCLEAR excitation , *SPECTRUM analysis , *RADIOACTIVE decay ,RUTHENIUM isotopes - Abstract
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 ( 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 decay of 100Mo to the excited level of 100Ru () are observed in the accumulated data both in coincidence and in the 1-dimensional sum spectrum. The measured half life is: , well in agreement with positive results obtained in previous experiments. Moreover, the limit on charge non-conserving β decay of 100Mo is also set: at 90% C.L.; it corresponds to the limit on CNC admixture in weak currents: . [ABSTRACT FROM AUTHOR]
- Published
- 2010
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