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摘要
                
            
            
                Neutron imaging techniques were investigated at Peking University based on a 4.5 MV Van de Graaff accelerator. The thermal neutron radiography, fast neutron radiography and fast neutron resonance radiography were tested. The low neutron flux limits the image quality. A new radio frequency quadrupole (RFQ) accelerator based neutron source with a yield of 1012 n/s is being set up.
            
            
                
Abstract
                
            
            
                Neutron imaging techniques were investigated at Peking University based on a 4.5 MV Van de Graaff accelerator. The thermal neutron radiography, fast neutron radiography and fast neutron resonance radiography were tested. The low neutron flux limits the image quality. A new radio frequency quadrupole (RFQ) accelerator based on neutron source with a yield of 1 012 n/s is being set up.
            
            
                
                    
关键词
                
                
                            
                            neutron imaging
                             / 
                            thermal neutron radiography
                             / 
                            fast neutron radiography
                             / 
                            fast neutron resonance radiography
                
                
                    
Key words
                
                
                            
                            neutron imaging
                             / 
                            thermal neutron radiography
                             / 
                            fast neutron radiography
                             / 
                            fast neutron resonance radiography
                
            
            
                
                    
                        
                            Zou Yubin, Guo Zhiyu, Tang Guoyou, Mo Dawei.
                            Neutron imaging at Peking University[J].
                            中国工程科学, 2009, 11(4): 83-85 DOI: