Modeling-based optimization study for an EDXRD system in a portable configuration,
Résumé
The energy-dispersive X-ray diffraction (EDXRD) has been pointed out to be well suited for the detection of narcotics and a wide range of explosives. This technique, combined with the dual-energy tomosynthesis, has been retained for the validation of a novel portable imaging system, whose aim is the characterization of dangerous/illicit materials inside objects. We present here the design methodology and the optimization study concerning the EDXRD modality. In order to evaluate the experimental conditions best suited for the system purposes, the kinematic theory of diffraction has been exploited to model the height and shape of diffraction patterns. From the simulation-based analysis a diffraction angle of 2.75° ± 0.10° and an X-ray tube voltage ≤ 160 kV have been selected.