Radiant energy – Invisible radiant energy responsive electric signalling – Neutron responsive means
Patent
1991-10-28
1992-10-06
Hannaher, Constantine
Radiant energy
Invisible radiant energy responsive electric signalling
Neutron responsive means
376159, 395 22, G01N 23222, G06F 1552, G06F 1518, G05B 1300
Patent
active
051534398
ABSTRACT:
A nuclear detection system and method uses an artificial neural system to efficiently detect explosives in checked airline baggage or other parcels with a high probability of detection (PD) and a low probability of false alarms (PFA). The detection system detects the presence of nitrogen and other elements and their rough density distribution within the object under investigation by performing a nuclear-based analysis of the object. The detection system includes a source of neutrons; an array of gamma ray detectors; at least one neutron detector; means for irradiating the object being examined with neutrons from the neutron source, which neutrons interact with the atomic nuclei of one or more specific elements, e.g., nitrogen, chlorine, or hydrogen present within the object so as to cause elemental-specific gamma rays to be emitted; means for capturing and counting the elemental-specific gamma rays and determining their approximate origin within the object, thereby providing a rough measure of the density distribution of these specific elements within the object; and means for detecting neutrons that pass through the object without substantially interacting with atomic nuclei, thereby providing an image of the density distribution of elements in the object. The invention further includes an X-radiography system for generating a high-resolution two-dimensional density image of the object. An artificial neural system (ANS) provides an efficient means for analyzing the recorded gamma rays, image, and other data so as to accurately discriminate between objects carrying explosives and objects not carrying explosives.
REFERENCES:
patent: 3018374 (1962-01-01), Prichett
patent: 3124679 (1964-03-01), Tittman et al.
patent: 3146349 (1964-08-01), Jordan
patent: 3237765 (1966-03-01), Gaudin et al.
patent: 3728544 (1973-04-01), Untemyer
patent: 3767919 (1973-10-01), Michaelis
patent: 3788256 (1974-01-01), Untermyer
patent: 3808444 (1974-04-01), Schneeberger et al.
patent: 3832545 (1974-08-01), Bartko
patent: 3997787 (1976-12-01), Fearon et al.
patent: 4229654 (1980-10-01), Arya et al.
patent: 4251726 (1981-02-01), Alvarez
patent: 4266132 (1981-05-01), Marshall, III
patent: 4278885 (1981-07-01), von Alfthan et al.
patent: 4291227 (1981-09-01), Caldwell et al.
patent: 4320298 (1982-03-01), Buford, Jr. et al.
patent: 4672651 (1987-06-01), Horiba et al.
patent: 4756866 (1988-07-01), Alvarez
patent: 4851687 (1989-07-01), Ettinger et al.
patent: 4882121 (1989-11-01), Grenier
patent: 5078952 (1992-01-01), Gozani et al.
Nuclear Instrumentation, Section 1.5, pp. 4-18 (McGraw-Hill Series in Nuclear Engineering).
"Neutron Radiology Takes X-Ray Pictures-with a Difference," Product Engineering, vol. 42, No. 12, pp. 38-39 (Jul. 1971).
Knoll, G. F., Radiation Detection and Measurement, (John Wiley and Sons, 1979).
Gozani, Active Nondestructive Assay of Nuclear Materials, United States Nuclear Regulatory Commission, NUREG-CR-0602, SAI-FM-2585 (1981).
Smith, et al., "Application of a 14 MeV Neutron Source to the Detection of Special Nuclear Material Diversion," IEEE Transactions on Nuclear Science, vol. NS-28, No. 2, p. 1637 (Apr. 1981).
Gozani, et al., "Nuclear-Based Techniques for Explosive Detection," Journal of Energetic Materials, vol. 4, pp. 377-414 (1986).
Drndarevic, et al., "A Signal Process For High Counting Rate Gamma Ray Spectroscopy with Nal(T1) Detectors," IEEE Proceedings of Nuclear Science (Feb. 1988).
Gozani Tsahi
Shea Patrick M.
Hannaher Constantine
Science Applications International Corporation
LandOfFree
Multi-sensor explosive detection system using an articifical neu does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multi-sensor explosive detection system using an articifical neu, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-sensor explosive detection system using an articifical neu will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1191266