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ZnWO_4 crystals as detectors for double beta decay and dark matter experiments

F. A. Danevich·V. V. Kobychev·S. S. Nagorny·D. V. Poda·V. I. Tretyak·S. S. Yurchenko·Yu. G. Zdesenko
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Abstract

Energy resolution, alpha/beta ratio, and the pulse shape discrimination ability of the ZnWO_4 crystal scintillators were studied. The radioactive contamination of a ZnWO_4 crystal was investigated in the Solotvina Underground Laboratory. Possibilities to apply ZnWO_4 crystals for the dark matter and double beta decay searches are discussed. New improved half-life limits on double beta decay in zinc isotopes were established, in particular, for ECβ^+ decay of 64-Zn as: T_1/2^2nu > 8.9 10^18 yr and T_1/2^0nu > 3.6 10^18 yr, both at 68% CL.

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F. A. Danevich, V. V. Kobychev, S. S. Nagorny, D. V. Poda, V. I. Tretyak, S. S. Yurchenko, Yu. G. Zdesenko. 2004-09-17. ZnWO_4 crystals as detectors for double beta decay and dark matter experiments. https://doi.org/10.1016/j.nima.2005.01.303

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