Assertion: impurity's density | /r/HasProperty | 7.1 g/cm3
Facets:
Source sentences:
text: 5 (Ce)) has an even higher density (7.1 g/cm3, comparable to BGO), is non-hygroscopic, and has a higher light output than BGO (32 photons/keV γ), in addition to being rather fast (41 ns decay time versus 300 ns for BGO).