New Detector for Gamma-Ray and Neutron Studies

Inorganic scintillation crystals are a very important element of the current and the next generation experiments in nuclear and particle physics. Performance of the nuclear physics detection systems is often limited by the properties of scintillators available for neutron and gamma ray detection. This project will investigate new scintillator materials that provide excellent light yield for neutrons and also provide pulse shape discrimination between neutron and gamma events. The new scintillators will also provide very good performance for gamma ray detection, including high light output, excellent energy resolution, fast response and very high timing resolution. The Phase I project was aimed at demonstrating the feasibility of producing the scintillators for neutron and gamma detection. Extensive characterization of the scintillators was conducted in the Phase I project. The Phase II project will be aimed at optimization of the proposed scintillators for eventual use in nuclear physics studies. Growth of large crystals, tuning of dopant concentration, and extensive characterization of scintillation properties is planned. Evaluation of these new scintillators in actual nuclear physics experiments is also planned. Commercial Applications and other Benefits as described by the awardee: The proposed detector technology is very promising for nuclear and particle physics experiments. It will also be applicable in medical imaging systems, astronomy, diffraction, non-destructive studies, nuclear non-proliferation, and bore hole logging.