Search for double beta decay of Zinc and Tungsten with the help of low-background ZnWO4 crystal scintillators - Nuclear ExperimentReportar como inadecuado




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Abstract: Double beta processes in 64-Zn, 70-Zn, 180-W, and 186-W have been searchedfor with the help of large volume 0.1-0.7 kg low background ZnWO4 crystalscintillators at the Gran Sasso National Laboratories of the INFN. Total timeof measurements exceeds 10 thousands hours. New improved half-life limits ondouble electron capture and electron capture with positron emission in 64-Znhave been set, in particular all the limits are at 90% C.L.: T1-20nu2EC>1.1e20 yr, T1-22nuECbeta+>7.0e20 yr, and T1-20nuECbeta+>4.3e20 yr. Thedifferent modes of double beta processes in 70-Zn, 180-W, and 186-W have beenrestricted at the level of 1e17-1e20 yr.



Autor: P.Belli, R.Bernabei, F.Cappella, R.Cerulli, F.A.Danevich, B.V.Grinyov, A.Incicchitti, V.V.Kobychev, V.M.Mokina, S.S.Nagorny, L.L.

Fuente: https://arxiv.org/







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