Determination of the neutron flux in the reactor zones with the strong neutron absorption and leakage

The procedures for the numerical and experimental determination of the neutron flux in the zones with the strong neutron absorption and leakage are described in this paper. The proposed procedures have been applied for the determination of the neutron flux in the internal neutron converter used with the RB reactor core configuration number 114. This paper shows: a) that the full heterogeneous core of complicate geometry, as the RB reactor core configuration No. 114, can be reliably calculated using the equivalence approach implemented in the VEGA2DAN code as a complement to the KENO-V.a multigroup Monte Carlo code; and b) a possibility of the RB reactor core configuration No. 114 for the irradiation of large samples in the field of fast neutrons.