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Determination of α factor of epithermal neutron flux in Dalat reactor, Vietnam, based on neutron spectrum calculated using MCNP code

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Abstract

The α-factor is a measure of the epithermal neutron flux deviation from the ideal distribution 1/E, where E is neutron energy. It defends on the position of the irradiation channel in reactor. A determination method of the α-factors in irradiation channels of Dalat reactor is presented by fitting the epithermal neutron spectrum obtained from the calculation using MCNP code. The fitting α-values were compared to those by experiment used the “Cd-ratio” method with monitors 197Au–94Zr and 197Au–64Zn. It shows that the α-values calculated from neutron spectra agree well with experimental ones. The difference between both data is about 6%.

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Authors and Affiliations

  1. Research and Development Center for Radiation Technology, 202A, 11 Str., Linh Xuan, Thu Duc, HoChiMinh City, Vietnam

    Tran Van Hung

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  1. Tran Van Hung
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Correspondence to Tran Van Hung.

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Van Hung, T. Determination of α factor of epithermal neutron flux in Dalat reactor, Vietnam, based on neutron spectrum calculated using MCNP code. J Radioanal Nucl Chem 283, 707–711 (2010). https://doi.org/10.1007/s10967-010-0457-0

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  • DOI: https://doi.org/10.1007/s10967-010-0457-0

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