METHOD AND SYSTEM FOR CONTRABAND DETECTION USING A PHOTONEUTRON X-RAY

摘要

A method and a system for contraband detection using a photoneutron X-ray are disclosed. Said system comprises: a X-ray generator for producing a X-ray main beam (3), said X-ray main beam (3) comprises a first X-ray beam (405) and a second X-ray beam (406), said first X-ray beam (405) is led to transmit through a detected object (8); a photoneutron conversion target (4), said photoneutron conversion target (4) is disposed to receive said second X-ray beam (406), thereby producing a photoneutron (6), said photoneutron (6) is led to enter said detected object (8), and reacted with said detected object (8) to emit a characteristic gamma ray; a X-ray detector, said X-ray detector is disposed to receive said first X-ray beam (405) passed through said detected object (8), in order to perform X-ray imaging detection of said detected object (8); a gamma ray detector, said gamma ray detector is disposed to receive said characteristic gamma ray, in order to perform neutron detection of said detected object (8) based on said characteristic gamma ray; wherein, said system performed X-ray imaging detection and neutron detection of said detected object (8) synchronously.