Patent ID: 8461534
Filing Date: 2013-06-11
Classification: G01V

Abstract:
1. A system for detecting explosive material, comprising: a neutron generator that emits neutrons toward a region of interest in space for a first period of time; a gamma ray detector, situated relative to the neutron generator and the region of interest to detect gamma radiation from excitation of material in the region of interest by the neutrons, that for a second period of time after the first period of time substantially simultaneously quantifies the amount of detected radiation in a first energy range and the amount of detected radiation in a second energy range; and a processor that processes the output of the gamma ray detector to produce a detection output signal as a function of the amount of radiation in the first energy range and the amount of radiation in the second energy range; wherein the second period of time ends 0.1 second or less after the end of the first period of time.