On the Absorption and the Diffusion of Slow Neutrons
On the Absorption and the Diffusion of Slow Neutrons
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关于慢中子的吸收和扩散
DOI：
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发表时间：
1936
期刊：
影响因子：
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通讯作者：
E. Fermi
中科院分区：
文献类型：
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作者：
E. Amaldi;E. Fermi
对慢中子吸收特性的研究证实了吸收带的存在，这些吸收带对应的能量间隔足够窄，可以分离出相对均匀的中子群。在这项工作中，我们描述了几个实验和考虑，旨在揭示的吸收和散射性质的各个群体的特点。总结：1.导论. 2.测量及其减少。3.选择性的放弃。4.慢中子群。5.系统吸收测量。6.阿尔贝都7.单个群中子的散射。8.热中子平均自由程。9.作为到源的距离的函数的组;能量比。10.中子从一群到另一群的传递。11.石蜡表面附近基团的行为。12.对应于基团的能带宽度。中子总数。13.总结和讨论。
The study of the absorption properties of slow neutrons establish the existence of absorption bands which correspond to energy intervals sufficiently narrow to allow one to isolate relatively homogeneous neutron groups. In this work, we describe several experiments and considerations designed to disclose the characteristics of the absorption and scattering properties of the various groups. Summary: 1. Introduction. 2. Measurements and their reduction. 3. Selective absorptions. 4. Slow neutron groups. 5. Systematic absorption measurements. 6. Albedo. 7. Scattering of the neutrons of a single group. 8. Mean free path of thermal neutrons. 9. Groups as a function of the distance from the source; energy ratios. 10. Passage of the neutrons from one group to another. 11. Behavior of the groups in the neighborhood of the surface of the paraffin. 12. Width of the energy bands corresponding to the groups. Total number of neutrons. 13. Summary and discussion.