Influence of the Neutron Flux Characteristic Parameters in the Irradiation Channels of Reactor on NAA Results Using k₀-Standardization Method

Tran Van Hung

Research and Development Center for Radiation Technology, Hochiminh City, Vietnam.

DOI: 10.4236/ajac.2012.33033                

Abstract

An approximation method using to estimate the influence of the uncertainties of the neutron flux characteristic parameters in the irradiation positions on the NAA results using k₀-standardization technique was presented. Those are the epithermal reactor neutron spectrum shape-factor α, the effective resonace energy Ε for a given nuclide and the thermal to epithermal neutron flux ratio f. The method is applied to estimate the effect of the uncertainties in the determination of α Ε, and f on final NAA results for some irradiation channels of the Dalat reactor. It also shows that presented method is suitable in practical use for the estimation of the errors due to the uncertainty of the neutron flux characteristic parameters at the irradiation position.

Keywords

k₀-Standardization Technique; Error Propagation Function; Neutron Flux Characteristics; Dalat Reactor

Conflicts of Interest

The authors declare no conflicts of interest.

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