Hidden explosives detector employing pulsed neutron and x-ray in

Details Hidden explosives detector employing pulsed neutron and x-ray in Hidden explosives detector employing pulsed neutron and x-ray in

1990-03-28

1993-04-06

Hannaher, Constantine

Radiant energy

Invisible radiant energy responsive electric signalling

Neutron responsive means

2503581, G01N 23222

Patent

active

052006263

ABSTRACT:
Methods and systems for the detection of small amounts of modern, highly-explosive nitrogen-based explosives, such as plastic explosives, hidden in airline baggage. Several techniques are employed either individually or combined in a hybrid system. One technique employed in combination is X-ray imaging. Another technique is interrogation with a pulsed neutron source in a two-phase mode of operation to image both nitrogen and oxygen densities. Another technique employed in combination is neutron interrogation to form a hydrogen density image or three-dimensional map. In addition, deliberately-placed neutron-absorbing materials can be detected.

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J. T. Caldwell, et al, Los Alamos National Laboratory Report No. LA-10774-MS, "The Los Alamos Second-Generation System for Passive and Active Neutron Assays of Drum-Size Containers," Sep. 1986.
F. J. Schultz, et al, Oak Ridge National Laboratory Report No. ORNL-6103, "Neutron and Gamma-Ray Nondestructive Examination of Contact-Handled Transuranic Waste at the ORNL TRU Waste Drum Assay Facility," Feb. 21, 1985.
C. H. Lavin, New York Times, "New Machines Can Detect Terrorists' Bombs, Usually," Sep. 12, 1989.
J. Yinon, et al, The Analysis of Explosives, pp. 258-263, Pergamon Press, 1981.
"Testimony of Lee Grodzins before the Sub-Committee on Gov. Activities and Transportation" House Gov. Operations Committee, Representative Cardiss Collins, Chair Sep. 26, 1989.

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