TlBr-LISSPRD

RMD is proposing to develop a semiconductor base Spectroscopic Personal Radiation Detector (SPRD). The gamma detection will be based on TlBr and the neutron detection – on LiInSe (LIS) semiconductors. These detection technologies have been under development in RMD for several years with the DHS and other government agencies support. The primary technological benefit of semiconductor detectors for gamma detection are their advanced spectroscopic capabilities highly important to identify radioisotopes. Additional benefits are compact size, robustness and insensitivity to magnetic fields. The technological benefit of semiconductor detectors for neutron detection is achieving high specific neutron sensitivity at low detector’s volume. Additional benefits include avoiding bulky He-3 tube detectors, compact size and easy integration into semiconductor-based gamma instruments due to similarity to the power supply and signal processing.The Phase 1 effort will result in the detection module design, including the device layout and readout requirements.In its completed state, the TlBr/LIS 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.