Detection of Explosives by Coherent X-Ray Scatter Signature

WEI Cun-Feng; YU Zhong-Qiang; YAN Yong-Lian; ZHOU Hua-Shi; GAO Shu-Qi; KONG Wei; XUE De-Sheng; WEI Long

Chinese Physics C> 2007, Vol. 31> Issue(1) : 104-107

Detection of Explosives by Coherent X-Ray Scatter Signature

Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education,Lanzhou University, Lanzhou 730000, China2 Key Laboratory of Nuclear Analytical Techniques, Institute of High Energy Physics, CAS, Beijing 100049, China

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Abstract：
Coherent X-ray scatter technology or energy-dispersive X-ray diffraction has been used for many years as a method to measure the atomic planar spacings in a crystalline substance. In this paper, this method has been shown to be of particular use when the requirement is to differentiate between low Z materials where transmission techniques provide very little contrast. We applied this technique to the detection and identification of explosives. Energy-dispersive detectors were used to collect coherent scatter spectra at a small angles (6.5°). It is shown that the information from these `signatures' can be used to determine whether an explosive sample is present or not. The geometrical configuration of the collimation and the position of the subject must be take into careful consideration when optimizing the capabilities of such a system.

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WEI Cun-Feng, YU Zhong-Qiang, YAN Yong-Lian, ZHOU Hua-Shi, GAO Shu-Qi, KONG Wei, XUE De-Sheng and WEI Long. Detection of Explosives by Coherent X-Ray Scatter Signature[J]. Chinese Physics C, 2007, 31(1): 104-107.

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Received: 2006-03-15
Revised: 2006-06-19

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Detection of Explosives by Coherent X-Ray Scatter Signature

Corresponding author: XUE De-Sheng,

Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education,Lanzhou University, Lanzhou 730000, China2 Key Laboratory of Nuclear Analytical Techniques, Institute of High Energy Physics, CAS, Beijing 100049, China

Received Date: 2006-03-15

Accepted Date: 2006-06-19

Available Online: 2007-01-05

Abstract: Coherent X-ray scatter technology or energy-dispersive X-ray diffraction has been used for many years as a method to measure the atomic planar spacings in a crystalline substance. In this paper, this method has been shown to be of particular use when the requirement is to differentiate between low Z materials where transmission techniques provide very little contrast. We applied this technique to the detection and identification of explosives. Energy-dispersive detectors were used to collect coherent scatter spectra at a small angles (6.5°). It is shown that the information from these `signatures' can be used to determine whether an explosive sample is present or not. The geometrical configuration of the collimation and the position of the subject must be take into careful consideration when optimizing the capabilities of such a system.

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Detection of Explosives by Coherent X-Ray Scatter Signature

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通讯作者: 陈斌, bchen63@163.com

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