Investigations of luminescence and radiation characteristics of a seri
es of heavy crystals based on CdF2, BaF2, LaF3, Pb0.67Cd0.33F2, Na0.4Y
b0.6F2.2, and Y3Al5O12, and a Phi-113 lead glass are presented. The ra
diation resistance of crystals based on CdF2 doped with YbF3, BiF3, an
d InF3 is more than 10 Mrad. We have also discovered that the relative
light yield of Cd0.95Mn0.05F2 is similar to 20000 photon/MeV, its bas
ic luminescence decay time is similar to 300 mu sec, and the luminesce
nce spectrum has a maximum at about 550 nm.