Measurement of absolute neutron flux in LWSCR based on the nuclear track method

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• 作者：J. Sadeghzadeh^a ; ^{j-sadeghzadeh@yahoo.com} ; N. Nassiri Mofakham^a ; Z. Khajehmiri^b
• 关键词：Solid state nuclear track detectors ; Irradiation method ; MCNP
• 刊名：Annals of Nuclear Energy
• 出版年：2012
• 期刊代码：1_03064549
• 类别：pw
• 出版时间：July, 2012
• 卷：45
• 期：Complete
• 页码：166-169
• 文件大小：667 K

摘要

In the present paper, a solid state nuclear track detector is applied to measure the absolute neutron flux in the light water sub-critical reactor (LWSCR) in Nuclear Science and Technology Research Institute (NSTRI). Up to now, the spectral parameters of thermal neutrons have been measured with activation foils that are not always reliable in low flux systems. The method investigated here is the irradiation method. Experiments concerning fission track detecting were performed. The experiment including neutron flux calculation method has also been investigated using the Monte Carlo code MCNP. The analysis shows that the values of neutron flux obtained by experiment are in fairly good agreement with the results obtained by MCNP. Thus, this method may be able to predict the absolute value of neutron flux at LWSCR and other similar reactors.