| IAEA-CN-115-61 · Using Neutron Generator with APT/NNA for Detection of Explosives A.V. Kuznetsov, A.V. Evsenin, I.Yu. Gorshkov, O.I. Osetrov, D.N. Vakhtin,
V.G. Khlopin Radium Institute, Saint-Petersburg, Russia
Abstract: Nanosecond Neutron Analysis (NNA) method with spatial selection of secondary gamma-radiation,
proposed at V. G. Khlopin Radium Institute as a further development of the well-known Associated Particle
Technique (APT), allows one to substantially (by two orders of magnitude) reduce the level of the background
radiation, making possible creation of devices for detection of small amounts of hazardous materials. A
prototype APT/NNA device is based on a DT neutron generator with built-in nine-segment semiconductor
detector of accompanying alpha-particles. The prototype is the basis for further development of the NNA
method in order to create devices for detection of explosives and other hazardous materials in luggage, sea
cargo containers, etc. A concept of a device for detection of hazardous materials in sea cargo containers “3D
NNA Scanner” has been developed. Results of numerical modeling suggest, that the device will be capable of
detecting 30 kg of explosives hidden anywhere inside a 40-feet cargo container within a 12 minute-long
inspection cycle.
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