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由江苏省农业科学院原子能农业利用研究所研制的LNW50A型中子土壤水分仪和该所与南京旭东无线电厂协作研制生产的β-γ射线示教仪,1986年12月在南京通过了省级鉴定。 LNW—50A型中子土壤水分仪 该仪器的探测原理是利用快中子与介质中的原子核发生碰撞,使快中子发生散射,快中子损失掉自己的能量,降低速度,变成慢中子和热中子。由于氢原子核与快中子的质量基本相等,并且氢核与快中子相互作用的散射面积较大,因此,当快中子遇到含氢量较大的介质
The LNW50A neutron soil moisture meter developed by Institute of Atomic Energy Utilization of Jiangsu Academy of Agricultural Sciences and the β-γ ray teaching instrument developed and produced by the institute in cooperation with Nanjing Xudong Radio Factory passed the provincial level test in Nanjing in December 1986 Identification. LNW-50A neutron soil moisture meter The detection principle of the instrument is the use of fast neutrons collision with the nucleus in the medium, so fast neutron scattering, fast neutrons lose their energy, reduce speed, become slow Son and heat neutrons. Due to the fact that the masses of hydrogen nuclei and fast neutrons are basically the same, and the scattering area between hydrogen nuclei and fast neutrons is relatively large, when fast neutrons encounter a medium with a large hydrogen content