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

摘要

A thermal neutron detector comprises an inorganic scintillation crystal, an inner sleeve on said scintillation crystal and including boron-10, and an outer lead sleeve on said inner sleeve for shielding gamma rays from the inner layer. The boron-10 may be carried in a resiliently compressible silicone cast on t he crystal to form a sleeve which functions to mechanically support the crystal inside a detector casing. The resiliently compressible, thermal neutron absorbing layer may also be used in other applications as a thermal neutron shield.