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首页> 外文期刊>Applied radiation and isotopes: including data, instrumentation and methods for use in agriculture, industry and medicine >A comparison of the neutron thermalization and reflection methods used for bulk hydrogen analysis.
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A comparison of the neutron thermalization and reflection methods used for bulk hydrogen analysis.

机译：用于批量氢分析的中子热化和反射方法的比较。

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摘要

The advantages and limitations of the slowing down of epithermal neutrons and the thermal neutron reflection methods were compared for bulk hydrogen analysis. In both cases, the same sample dimensions were used, i.e. 10cm diameter and 8cm height. It was found that the sensitivity of the slowing down method is higher by a factor of approximately 20 in average and the matrix effect can be neglected as compared to the neutron reflection technique. The simultaneous application of the two methods renders the determination of the H content and the C/H atomic ratio possible. The effect of spatial distribution of hydrogen in the matrix to be investigated on the number of reflected neutrons was also studied.
机译：比较了超热中子减速的优点和局限性以及热中子反射方法在大体积氢分析中的作用。在这两种情况下，都使用相同的样本尺寸，即直径10cm和高度8cm。已经发现，与中子反射技术相比，减速方法的灵敏度平均高出约20倍，并且可以忽略基体效应。两种方法的同时应用使得确定H含量和C / H原子比成为可能。还研究了要研究的基质中氢的空间分布对反射中子数的影响。

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