THE USE OF BALL MODERATORS FOR NEUTRON SPECTROMETRYJournal: The Way of Science (Vol.1, No. 30)
Publication Date: 2016-08-11
Authors : Fedorov S.G.;
Page : 16-19
Keywords : neutron spectrometer; Bonner sphere.;
A spectrometer with ball moderators of polyethylene was designed at FSUE "VNIIFTRI". As a detector of slow neutrons there were used a LiI scintillator with natural lithium and a spherical proportional counter with a diameter of 5 cm filled with 10BF3 gas. Using two different detectors can reduce systematic measurement error. Response from the detectors which are placed in the ball moderators, is performed by using a specially designed device. Measurement and processing of measurements are carried out automatically using a developed program named ?boll?. Restoration of the neutron spectrum is carried out using a developed program named ?spectr?. Energy dependence of the sensitivity of the detectors placed in the moderators, which is needed for neutron spectrum restoration, is calculated using the Monte Carlo method.
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Last modified: 2016-08-15 18:15:39