FAST NEUTRON DETECTION METHOD, SUBSTANCE DISCRIMINATION METHOD AND NEUTRON DETECTOR

• Main Authors: ZHANG, QINJIAN, LI, TIEZHU, WU, BIN, YANG, YIGANG, LI, YUANJING
• Format: Patent
• Language: Chinese; English; French
• Published: 07.07.2011
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASUREMENT OF NUCLEAR OR X-RADIATION; MEASURING; PHYSICS; TESTING

A fast neutron detection method, which is used to detect the fast neutrons associated with X-ray, includes: the fast neutrons are transmitted trough a neutron moderator (342) so that the X-ray is absorbed and the fast neutrons are moderated into thermal neutrons; and the thermal neutrons are detected by a thermal neutron detector (343) so that the information of the fast neutrons is acquired. A neutron detector (34) includes a neutron moderator (342), which is suitable for absorbing the X-ray passing through it and moderating fast neutrons into thermal neutrons; and a thermal neutron detector (343), which is suitable for detecting the thermal neutrons so that the information of the fast neutrons is acquired. A substance discrimination method using photo neutrons and a substance discrimination method using X-ray and photo neutrons simultaneously are also disclosed. The invention can eliminate the disturbance to the fast neutron measurement from the X-ray by providing neutron moderator (342), therefore the accu