A new method for neutron detection system non-linearity assessment and correction is proposed and was tested at the VR-1 reactor. It is based on the known behaviour of a zero-power nuclear reactor during the asymptotic positive period, which is used as a source of a true (non-linearity unaffected) signal for detection system non-linearity correction. The proposed method can determine the non-linearity correction continuously for a wide range of count rates and does not require additional equipment but the detection line for which the non-linearity effect is to be evaluated.
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| http://dx.doi.org/10.1016/j.apradiso.2019.109016 | DOI Listing |
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