NEUTRON SENSOR, WITH SCINTILLATING PLASTIC, SURROUNDING A GADOLINIUM OR CADMIUM CORE, AND DORNE OR BORON OR LITHIUM COATED SCINTILLATING COVER, AND ASSOCIATED NEUTRON COUNTERING DEVICE

摘要

A scintillating plastic neutron detector surrounding a gadolinium or cadmium core and a doped or covered cover with boron or lithium and associated neutron counting device. The neutron detector comprises a core (2), rich in gadolinium or cadmium, a scintillator shell (10), which surrounds the core, and a photon converting device (16) which interfaces with the shell and which converts the scintillation photons from the shell into a representative signal thereof. According to the invention, the detector further comprises a scintillator layer (12) containing boron or lithium, which surrounds the shell. The counting device comprises the detector and a neutron count signal processing device (20) from a signal representative of the scintillation photons. The invention applies in particular to dose rate measurements