Diffraction of slow neutrons by stratified systems
Diffraction of slow neutrons by stratified systems
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分层系统对慢中子的衍射
DOI：
10.1007/bf01246267
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发表时间：
1967
期刊：
影响因子：
--
通讯作者：
V. Turchin
中科院分区：
文献类型：
--
作者：
V. Turchin
实验结果表明，在石混凝土的氢含量的变化只有一个小的影响，快中子的去除长度。由于石混凝土的密度大，其松弛长度小于普通混凝土（组合物1-4，7- 8，参见表1）。对于相同密度的石混凝土和普通混凝土（组合物5和6），石混凝土中的松弛长度也较小，这是由于构成它们的轻元素的大部分。在石混凝土和普通混凝土屏蔽中，中子谱的稳定化发生在几乎相同的深度处，因此在大屏蔽厚度处，石混凝土屏蔽中热中子和中间中子的k等于快中子的~。由于氢含量较少，
The results of the experiments showed that a change in the hydrogen content of stone concrete had only a small effect on the fast neutron removal length. Because of the large densities of stone concrete the relaxation length in them is smaller than in ordinary concretes (compositions 1-4, 7--8 cf. Table 1). For stone concrete and ordinary concrete of the same density (compositions 5 and 6) the relaxation length in stone concretes is also smaller due to the large fraction of light elements composing them. Stabilization of the neutron spectrum occurs at practically the same depth in stone concrete and ordinary concrete shields and therefore at large shield thicknesses k for thermal and intermediate neutrons in stone concrete shields is equal to~ for fast neutrons. As a consequence of the smaller hydrogen content