We have developed an energy dispersive X-ray scatter experimental platform for detecting contraband.NaCl has been used as a standard sample to verify the accuracy

reliability and energy resolution of the equipment.The lattice constants of NaCl calculated from the energy dispersive curves obtained by the equipment are in accord with the standard X-ray diffraction data―PDF (Powder Diffraction File) issued by the International Centre for Diffraction Data.The equipment demonstrates a high energy resolution

where the primary peak of NaCl at 15.82 keV has a resolution of 0.348 keV (FWHM).The equipment was also used to detect common explosive (TNT) and common drug (heroin)

where the characteristic energy dispersive patterns of the two kinds of materials have been acquired at different detecting angles.Among all the measured detecting angles

more diffraction peaks and higher intensities in those peaks are demonstrated at detecting angles of 10° and 12°.The results indicate that these two detecting angle are possibly more suitable for detecting TNT and heroin.