Year
1996
Abstract
There is a strong need for portable radiometric instrumentation that can both accurately confii the presence of nuclear materials and allow isotopic analysis of radionuclides in the field. To fulfill this need the Safeguards Technology Program at the Lawrence Livermore National Laboratory, in collaboration with EG&G ORTEC, has developed a hand-held, non-cryogenic, low-power gammaand x-ray measurement and analysis instrument that can both search for and then accurately verify the presence of nuclear materials. We will report on the use of cadmium zinc telluride (CZT) detectors, detector electronics, and the new field-portable instrument being developed. We will also describe the isotopic analysis that allows enrichment measurements to be made accurately in the field. These systems provide capability for safeguards inspection and verification applications and could find application in counter-smuggling operations.