properties of PbWO4:

Density(g.cm-3)	8.28
Radiation length(cm)	0.92
Decay constant(us)	6ns/30ns
Emission peak(nm)	440/530
Light yield(%NaI:Tl)	0.5
Melting point(°C)	1123
Hardness(Mho)	/
refractive Index	2.16
Hygroscopicity	none
Cleavage	(101)