A Movable Device of Explosives Detection

This paper introduces a movable detection device for explosives hidden in wall. The device is composed of the 14MeV neutron generator, the silicon detector and Φ76mm×76mm LYSO detector. The γ spectra produced by the inelastic scattering interaction provide the relative counts of C, N, O, which are converted into chemical fractions to distinguish the explosives from the organic compounds. The device using associate particle method reduces the background 200–300 times. The 300g ammonium nitrate and TNT explosive simulated samples placed behind the 15cm-thick and 10cm-thick wall is detected by the device, respectively, when the neutron intensity is 1×107n/s. Compared with other methods, the experimental results show that the device with associate particle method has higher detection space resolution ability and explosives recognition ability. The device can provide the support for the detection of explosives.

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Simulation and optimization of cyclic activation Analysis of short-lived isotopes with 14MeV neutron generator

Biological Trace Element Research ◽

10.1007/bf02917371 ◽

1994 ◽

Vol 43-45 (1) ◽

pp. 679-686 ◽

Cited By ~ 1

Author(s):

R. Khelifi ◽

Z. Idiri ◽

S. Tobbeche

Keyword(s):

Activation Analysis ◽

Neutron Generator ◽

Cyclic Activation ◽

Simulation And Optimization ◽

Cyclic Activation Analysis ◽

14Mev Neutron

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Non-invasive field measurements of soil water content using a pulsed 14MeV neutron generator

Soil and Tillage Research ◽

10.1016/j.still.2011.12.009 ◽

2012 ◽

Vol 120 ◽

pp. 130-136 ◽

Cited By ~ 3

Author(s):

S. Mitra ◽

L. Wielopolski ◽

R. Omonode ◽

J. Novak ◽

J. Frederick ◽

...

Keyword(s):

Water Content ◽

Soil Water ◽

Soil Water Content ◽

Neutron Generator ◽

Field Measurements ◽

Non Invasive ◽

14Mev Neutron

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Nuclear Quadrupole Resonance Technology Applied in the Field of Explosives Detection

Volume 1: Plant Operations, Maintenance, Engineering, Modifications, Life Cycle and Balance of Plant; Nuclear Fuel and Materials; Radiation Protection and Nuclear Technology Applications ◽

10.1115/icone21-15072 ◽

2013 ◽

Author(s):

Gaokui He ◽

Xiangyang Zhang ◽

Guobao Wang ◽

Yuqing Wan ◽

Huayang Tian

Keyword(s):

Nuclear Quadrupole Resonance ◽

Detection System ◽

Explosives Detection ◽

Detection Techniques ◽

Research Activities ◽

Detection And Identification ◽

Quadrupole Resonance ◽

Nuclear Quadrupole ◽

Almost All ◽

Detection Of Explosives

There are a number of detection techniques for the detection of explosives, 14N nuclear quadrupole resonance (NQR) is a very promising technique owing to its unambiguous detection and identification of explosives. with this unique advantage, NQR technique gets more and more attentions around the world. Almost all of the explosives contain nitrogen element, the 14N nucleus is a non-spherically symmetric nucleus and has a quadrupole moment, the same 14N nuclei in different substances have different NQR frequencies, therefore, each substance is characterized by its own NQR frequency. So far, there have been more than 30 NQR probe nuclei, more than 10 thousands of substances have been investigated by the NQR technique and no identical NQR frequencies have been found. China Institute of Atomic Energy (CIAE) has investigated the concealed explosives detection by NQR for many years, this paper introduces the principle of 14N NQR detection, the structure of NQR detection system, and the application of NQR for the detection of explosives, mainly reviews the research activities of NQR at CIAE.

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