Determination of liquid's molecular interference function based on X-ray diffraction and dual-energy CT in security screening

被引：10
|
作者：
Zhang, Li [1 ,2 ]
Tianyi YangDai [1 ,2 ]
机构：
[1] Tsinghua Univ, Dept Engn Phys, Beijing 100084, Peoples R China
[2] Tsinghua Univ, Minist Educ, Key Lab Particle & Radiat Imaging, Beijing, Peoples R China
来源：
APPLIED RADIATION AND ISOTOPES | 2016年 / 114卷
基金：
中国国家自然科学基金;
关键词：
X-ray diffraction; Dual-energy computed tomography; Molecular interference function; Liquid classification; Security screening; EXPLOSIVES DETECTION; OPTIMIZATION; SCATTER;
D O I：
10.1016/j.apradiso.2016.05.019
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
A method for deriving the molecular interference function. (MIF) of an unknown liquid for security screening is presented. Based on the effective atomic number reconstructed from dual-energy computed tomography (CT), equivalent molecular formula of the liquid is estimated. After a series of optimizations, the MIF and a new effective atomic number are finally obtained from the X-ray diffraction (XRD) profile. The proposed method generates more accurate results with less sensitivity to the noise and data deficiency of the XRD profile. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：179 / 187
页数：9
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