Estimation of the value and localization of possible systematic errors in determination of level density and radiative strength functions from the (n,2gamma) -reaction

Systematic error in determination of the absolute intensities of the two-step gamma-cascades after the thermal neutron capture and its influence on the value and localization of extracted from (n,2gamma)-reaction probable level densities and radiative strength functions of dipole gamma-transitions have been analysed. It was found that this error in limits of its possible magnitude cannot change made earlier conclusions about the radiative strength functions of E1- and M1- transitions at Egamma ~ 3 MeV and level density of heavy nucleus below ~0.5Bn.