Determining absolute value of thermal neutron flux density based on monocrystalline silicon in nuclear reactors  

作　　者：V.A.Varlachev E.G.Emets Yu-Chen Mu E.A.Bondarenko V.A.Govorukhin 

机构地区：[1]National Research Tomsk Polytechnic University,Tomsk,634050,Russia

出　　处：《Nuclear Science and Techniques》2022年第7期133-138,共6页核技术（英文）

基　　金：the support of the TPU Competitiveness Improvement Program(2030).

摘　　要：A new type of neutron detector based on monocrystalline Si is developed to measure the fluence and flux density of thermal and fast neutrons.The principle of this detector is based on the relationship between changes in electrical conductivity and neutron fluence during irradiation.Therefore,the absolute values of thermal neutron fluence and flux density are measured in a facile manner with high reliability.Compared with activation methods,our method not only possesses a similar accuracy,but also demonstrates superior application potential for the investigation of neutron fields in nuclear reactors owing to its suitable half-life.

关 键 词：Thermal neutron Neutron detector Neutron flux density Cadmium difference methods 

分 类 号：TL816.3[核科学技术—核技术及应用]