Scintillation Probes (Neutrons):
- PNS-19 Fast Neutron Scintillation Probe insensitive to gamma radiation in fields below 100 R/hr. The n-p reaction is used to measure energy deposited by neutrons. A shaped light pipe and moderator about the ZnS.Ag phosphor gives a consistent Rem to count ratio for incident neutrons 1/4 MeV and above, within ± 30% . (Figure 1)
- PNS-20 Slow Neutron Scintillation Probe. Thermal neutrons are detected by means of the boron n-alpha reaction. Probe delivers approximately 60 cpm per neutron/cm2/second and requires a 900 volt supply. The probe is 8'' long x 2'' in diameter. It is completely insensitive to gammas in fields below 10R/hr. To measure fast neutrons, use the PNS-19 probe. (Figure
1)
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Figure 1
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