THERMAL NEUTRON DETECTOR USING A SCINTILLATOR WITH BACKGROUND GAMMA-RAY SHIELDING

摘要

A thermal neutron detector comprises an inorganic scintillation crystal, aninner sleeve on said scintillation crystal and including boron-10, and anouterlead sleeve on said inner sleeve for shielding gamma rays from the innerlayer.The boron-10 may be carried in a resiliently compressible silicone cast on thecrystal to form a sleeve which functions to mechanically support the crystalinside a detector casing. The resiliently compressible, thermal neutronabsorbing layer may also be used in other applications as a thermal neutronshield.