TlBr-LISSPRD

RMD is developing a semiconductor base Spectroscopic Personal Radiation Detector (SPRD). The gamma detection is 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 II effort will result in the development of functional prototypes, two in year one and 5 in year two, to meet ANSI N42-48 standard. 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 energy and medicine, space and geological sciences and industrial non-destructive testing