Patent ID: 6781134
Filing Date: 2004-08-24
Classification: G01T

Abstract:
A handheld device for detecting and identifying radioisotopes, comprising:a cadmium zinc telluride (CZT), gamma-ray sensor configured to produce gamma-ray data; a processor; a memory coupled to the processor, the memory configured to store instructions executable by the processor; a multi-channel analyzer (MCA) coupled to the gamma-ray sensor and processor, the MCA configured to produce pulse height data corresponding to the gamma-ray data; a fuzzy-logic component that uses at least one weighting value, the fuzzy-logic component being coupled to the MCA and processor, the fuzzy-logic component configured to compile a ranked listing of radioisotopes corresponding to the produced pulse height data, the ranked listing indicating how closely pulse height data from a library of radioisotopes matches the produced pulse height data; and an interface coupled to the fuzzy-logic component, the interface configured to convey a signal containing the ranked listing of radioisotopes from the fuzzy-logic component to a display component; wherein a combination of the gamma-ray sensor, processor, memory, MCA, fuzzy-logic component, and interface are sized to be held in a person's hand.