TlBr Detectors for Radiation Pagers

RMD is proposing to construct a compact detector module for radiation pager applications utilizing a TlBr semiconductor device as the radiation sensitive element. Due to its excellent energy resolution, detection efficiency and low cost crystal growth method, a TlBr-based pager should greatly expand the capabilities and availability of these instruments. Various detector designs were evaluated during Phase I, using sensitivity and energy resolution as key differentiators. With a basic design now selected, RMD will start Phase II by refining design details and fabrication procedures, all with the goal of achieving a robust detector technology. The ANSI N42.32 standard will be met and further potential will be demonstrated towards meeting future radioisotopic identification needs. By program end, RMD will construct a prototype pager that highlights the technology. In its completed state, the TlBr technology will provide a new level of performance to the Nation's capabilities in monitoring the flow of radioactive materials within its borders. Other potential commercial applications include nuclear medicine, space and geological sciences and industrial non-destructive testing.