Application of PbWO4 crystal scintillators in experiment to search for   double beta decay of 116Cd
  PbWO4 crystal scintillators are discussed as an active shield and light-guides in 116Cd double beta decay experiment with CdWO4 scintillators. Scintillation properties and radioactive contamination of PbWO4 scintillators were investigated. Energy resolution of CdWO4 detector, coupled to PbWO4 crystal as a light-guide, was tested. Efficiency of PbWO4-based active shield to suppress background from the internal contamination of PbWO4 crystals was calculated. Using of lead tungstate crystal scintillators as high efficiency 4-pi active shield could allow to build sensitive double beta experiment with 116CdWO4 crystal scintillators. 
F.A.Danevich, A.Sh.Georgadze, V.V.Kobychev, B.N.Kropivyansky,   S.S.Nagorny, A.S.Nikolaiko, D.V.Poda, V.I.Tretyak, S.S.Yurch...