Neutron spectrometry by sandwich surface barrier technique

A neutron spectrometer using silicon surface barrier detectors employed 6LiF as a radiating material is developed. An incident neutron interacts with the radiating atom resulting in two charged particles, which are detected by sandwich detector geometry and the corresponding sum pulses from both the detectors shall uniquely define the incident neutron energy. Results obtained by Monte Carlo simulation of all the correction factors for the detector head employed are presented. A new concept for resolution correction is developed which brings down the lower energy limit of the detector system. The spectrometer is employed for incore spectrum studies in case of a thermal reactor ''Kahter'' and the results obtained exhibit a good agreement with that of calculations by GAM THERMOS EXTERMINATOR Code