Radiopurity of ZnWO4 Crystal Scintillators

P. Bellia, R. Bernabeia, F. Cappellab, R. Cerullic, F.A. Danevichd, A.M. Dubovike, S. d'Angeloa, E.N. Galashovf, B.V. Grinyove, A. Incicchittib, V.V. Kobychevd, L.L. Nagornayae, S. Nisic, F. Nozzolia, D.V. Podad, R.B. Podviyanukd, D. Prosperib, V.N. Shlegelf, V.I. Tretyakd, Ya.V. Vasilievf and Yu.Ya. Vostretsove a Dipartimento di Fisica, Università di Roma "Tor Vergata" and INFN, Sezione di Roma, I-00133 Rome, Italy b Dipartimento di Fisica, Università di Roma "La Sapienza" and INFN, Sezione di Roma, I-00185 Rome, Italy c INFN, Laboratori Nazionali del Gran Sasso, 67010 Assergi (AQ), Italy d Institute for Nuclear Research, MSP 03680 Kyiv, Ukraine e Institute for Scintillation Materials, 61001 Kharkiv, Ukraine f Nikolaev Institute of Inorganic Chemistry, 630090 Novosibirsk, Russia

Full Text PDF

Recently ZnWO4 was proposed as perspective material for low-counting experiments to search for rare processes. Such experiments demand high radiopurity of ZnWO4 crystal scintillators. With this aim radioactive contamination of large volume (0.1-0.7 kg) ZnWO4 crystal scintillators were measured in the underground Laboratori Nazionali del Gran Sasso of the INFN at the depth of ≈ 3600 m water equivalent.

DOI: 10.12693/APhysPolA.117.139 PACS numbers: 29.40.Mc, 23.40.-s