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Examples of scintillation materials used in PET detectors (data from [11], [12]). Zeff is the effective atomic number.
| Material | Density (g/cm3) | Zeff | Light output (photons/keV) | Decay time (ns) | Hygroscopic |
|---|---|---|---|---|---|
| NaI:Tl | 3.67 | 51 | 41 | 230 | yes |
| BGO | 7.1 | 75 | 9 | 300 | no |
| L(Y)SO:Ce | 7.1-7.4 | 65-66 | 26-34 | 38-44 | no |
| BaF2 | 4.9 | 54 | 1.3-1.4 | 0.8 | no |
| CsF | 4.6 | 52 | 1.9-2.0 | 3 | yes |
| LaBr3:Ce | 5.1 | 45 | 64-76 | 16 | yes |
