Detector type | Size/scalability | Cost | Gamma rejection |
---|---|---|---|
He-3 G-M tubes | medium-large | High | good |
BF3 G-M tubes | medium-large | high | good |
Scintillators: LiF w/ PMT or SiPM LiF/ZnS(Ag) CLYC |
medium medium-large small |
medium medium high |
poor good poor |
µ-structured Si wafer | small | high | poor |
Thin-film 6Li/CdTe (LiNDA) |
small-large1 (modular) | low2 | excellent3 |
1 All types can be configured to yield >30% thermal neutron efficiency; some easier than others. 2 Some types have limitations due to microphonics, temp sensitivity, moisture sensitivity, etc. 3 Li or B must be isotopically enriched to Li-6 and B-10. |