SELF-POWERED IN-CORE NEUTRON DETECTOR ASSEMBLY WITH UNIFORM PERTURBATION CHARACTERISTICS

摘要

47,073 SELF-POWERED IN-CORE NEUTRON DETECTOR ASSEMBLY WITH UNIFORM PERTURBATION CHARACTERISTICS A self-powered in-core neutron detector assembly in which a plurality of longitudinally extending selfpowered detectors have neutron responsive active portions spaced along a longitudinal path. A low neutron absorptive extension extends from the active portions of the spaced active portions of the detectors in symmetrical longitudinal relationship with the spaced active detector portions of each succeeding detector. The detector extension terminates with the detector assembly to provide a uniform perturbation characteristic over the entire assembly length.