Radiant energy – Invisible radiant energy responsive electric signalling – Neutron responsive means
Patent
1987-01-13
1989-07-25
Howell, Janice A.
Radiant energy
Invisible radiant energy responsive electric signalling
Neutron responsive means
25037005, 376159, G01T 300
Patent
active
048516872
ABSTRACT:
An apparatus and method for scanning an object for nitrogen for detecting the presence of explosives in luggage, parcels and the like. The object is placed in a cavity in which a thermal neutron flux is produced by introducing fast neutrons in the presence of a nuclear moderating material. A reaction between the thermal neutrons and the nitrogen contained in the object causes gamma rays to be emitted which are detected and transmitted to processing electronics to determine the concentration and position of nitrogen in the object. Thermal neutrons sensors are located within the cavity to monitor the amount of thermal neutrons and adjust the thermal neutron flux within the cavity in order to maintain an optimal thermal neutron flux density within the cavity. The adjustment may be effectuated by adjusting the accelerating potential of a neutron accelerator or by adjusting the position of a neutron moderator for use with an isotopic neutron source.
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Brondo, Jr. Joseph H.
Ettinger Kamil V.
Howell Janice A.
Rauchholz William F.
Scientific Innovations, Inc.
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