“…More recently, radiopurity and double beta decay processes of zinc and tungsten have been further studied also at LNGS using new developed ZnWO 4 detectors with masses 0.1 − 0.7 kg [8,9,18,19]. The growth of the crystals, the scintillation properties, the pulse shape discrimination capability, the anisotropic properties, the residual radioactive contamination and the possible applications have been deeply studied [8,10,14,15,[17][18][19][20]. The obtained results are very promising and an R&D to produce ZnWO 4 crystals having higher radiopurity is still ongoing.…”