Optimization of the Structure of a Heterogeneous Scintillator for Thermal Neutron Detection

Seminars

Dzhelepov Laboratory of Nuclear Problems

Joint Laboratory Seminar

Date and Time: Wednesday, 7 April 2021, at 11:00 AM

Venue: Online conference in Zoom

Seminar topic: “Optimization of the Structure of a Heterogeneous Scintillator for Thermal Neutron Detection”

Authos: E. S. Kuzmin, I. Yu. Zimin

Speaker: I. Yu. Zimin

Abstract:

At the seminar, the results of simulation and optimization of a composite scintillator for thermal neutron detection will be presented. The interaction of thermal neutrons and gamma quanta with composites was simulated. The composites consist of glass scintillator particles, containing 6Li, arranged in an organic matrix. The purpose of these studies was to determine the structure of a composite with high sensitivity to thermal neutrons and efficient reduction of gamma signals. The simulation identified optimal structural parameters of the composite, such as grain size and glass concentration. The simulation results demonstrate that the optimized composites can provide under thermal neutron irradiation the neutron detection efficiency of at least 50% with the gamma rejection of about 10-7.