Optimization of source–sample–detector geometries for bulk hydrogen analysis using epithermal neutrons

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• 作者：J. Csikai ; R. Dó ; czi
• 关键词：Neutron moderation ; Neutron scattering ; Hydrogen determination
• 刊名：Applied Radiation and Isotopes
• 出版年：2009
• 出版时间：January 2009
• 年：2009
• 卷：67
• 期：1
• 页码：70-72
• 全文大小：238 K

文摘

The advantages and limitations of epithermal neutrons in qualification of hydrocarbons via their H contents and C/H atomic ratios have been investigated systematically. Sensitivity of this method and the dimensions of the interrogated regions were determined for various types of hydrogenous samples. Results clearly demonstrate the advantages of direct neutron detection, e.g. by BF₃ counters as compared to the foil activation method in addition to using the hardness of the spectral shape of Pu–Be neutrons to that from a ²⁵²Cf source.