Ad. Lavietes et al., DEVELOPMENT OF A PORTABLE AMBIENT-TEMPERATURE RADIOMETRIC ASSAYING INSTRUMENT, IEEE transactions on nuclear science, 42(4), 1995, pp. 634-638
There is a strong need for portable radiometric instrumentation that c
an accurately confirm the presence of nuclear materials and allow isot
opic analysis of radionuclides in the field. To fulfill this need we a
re developing a hand-held, non-cryogenic, low-power gamma and X-ray me
asurement and analysis instrument that can both search and then accura
tely verify the presence of nuclear materials. We will report on the u
se of cadmium zinc telluride detectors, signal processing electronics,
and the new field-portable instrument based on the MicroNOMAD Multich
annel Analyzer from EG&G ORTEC. We will also describe the isotopic ana
lysis that allows uranium enrichment measurements to be made accuratel
y in the field.