title: Determination of liquid's molecular interference function based on X-ray diffraction and dual-energy CT in security screening.
abstract: 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.
authors.affiliation: Department of Engineering Physics, Tsinghua University, Beijing 100084, China; Key Laboratory of Particle & Radiation Imaging (Tsinghua University), Ministry of Education, China. Electronic address: zhangli@nuctech.com.
authors.forename: Li
authors.initials: L
authors.lastname: Zhang
authors.affiliation: Department of Engineering Physics, Tsinghua University, Beijing 100084, China; Key Laboratory of Particle & Radiation Imaging (Tsinghua University), Ministry of Education, China.
authors.forename: Tianyi
authors.initials: T
authors.lastname: YangDai
keywords: Dual-energy computed tomography; Liquid classification; Molecular interference function; Security screening; X-ray diffraction