Patent ID: 8586939
Filing Date: 2013-11-19
Classification: G01V

Abstract:
1. A neutron radiography system, comprising: a first neutron source; a first array of one or more alpha particle detectors configured to detect alpha particles associated with neutrons generated by the first neutron source; a second neutron source; a second array of one or more alpha particle detectors configured to detect alpha particles associated with neutrons generated by the second neutron source; one or more neutron detectors positioned to detect at least some of the neutrons generated by the first neutron source and the second neutron source; an interrogation region located between the first neutron source, the second neutron source, and the one or more neutron detectors; and an image processing system coupled to the first array of one or more alpha particle detectors, the second array of one or more alpha particle detectors, and the one or more neutron detectors, the image processing system being configured to generate a first projection image of an object positioned in the interrogation region based at least in part on neutrons emitted from the first neutron source that are associated with alpha particles detected at the first array of one or more alpha particle detectors and that are detected at the one or more neutron detectors while also discriminating and ignoring neutrons that are scattered by or fissioned from the object positioned in the interrogation region as well as neutrons from the second neutron source, the image processing system being further configured to generate a second projection image of the object positioned in the interrogation region based at least in part on neutrons emitted from the second neutron source that are associated with alpha particles detected at the second array of one or more alpha particle detectors and that are detected at the one or more neutron detectors while also discriminating and ignoring the neutrons that are scattered by or fissioned from the object positioned in the interrogation region as well as neutrons from the first neutron source.