Tl-based elpasolites for radiation detection

Preventing the proliferation of nuclear materials is critical in maintaining national security and safety. One key method is to identify Special Nuclear Materials (SNM) through their characteristic gamma-ray radiation and neutron emissions. None of the detectors available at present meet the key requirements of high energy resolution, high detection efficiency and low cost. How the Problem is Addressed: The goal of the proposed effort is to develop new scintillating materials capable of detecting gamma-rays with very high efficiency and energy resolution and make them available at low cost. Simultaneous detection of neutrons with high efficiency will be possible, providing further reduction in cost and making the eventual instruments more compact. Plans for Phase I: The Phase I project will be aimed at optimization of the materials, demonstrating the feasibility of manufacturing in larger volumes. Detailed evaluation of scintillation and materials properties and gamma-ray and neutron detection characteristics is also planned. Commercial and Scientific Potential: A system capable of detection gamma-ray and neutrons with high gamma-ray energy resolution will easily find use in nuclear non-proliferation and homeland security instruments. Moreover, fields such as nuclear physics, medical imaging, oil well logging and material sciences will benefit from such detectors and systems.