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本厂作用直接γ能谱法测量了热中子和3.0、5.0、5.5、8.0和14.8 MeV中子诱发235U裂变时的裂变产物产额。本工作的目的是测量95Zr、140Ba、147Nd等核素的产额随入射中子能量的变化关系,进而研究其规律性。其中,140Ba是作为监督核测量的,它位于产额双驼峰曲线重峰的峰区。在本测量工作中,对样品中裂变产物的测量使用了直接γ能谱法。最后给出的测量结果除热中子是绝对测量值外,其余能点各核素的裂变产额值均是通过“快热比”方法给出的,即是以热中子诱发235U裂变产额为基准的相对产额值。采用“快热比”方法测量
The role of the factory direct gamma spectrometry thermal neutron and 3.0,5.0,5.5,8.0 and 14.8 MeV neutron induced 235U fission fission product yield. The purpose of this work is to measure the variation of the yield of 95Zr, 140Ba, 147Nd and other nuclides with the incident neutron energy, and then to study its regularity. Among them, 140Ba is used as a supervised nuclear measurement, and it is located in the peak of the double hump peak. In this work, direct gamma spectrometry was used to measure the fission products in the sample. Finally, the measurement results given in addition to the thermal neutrons is the absolute measurement, the remaining energy point of the nuclide fission yield values are given by the “fast heat ratio” method, that is, the thermal neutron induced 235U fission The relative amount of value as a benchmark. Using the “fast ratio” method of measurement