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The direct determination of the excitation level density and radiativestrength functions of their exciting gamma-transitions is impossible for thelarger part of the stable and long-life radioactive target nuclei. Thiscircumstance is uniquely determined by the fact, that the level spacing muchless than the resolution of the existing spectrometers of gamma-rays andcharged particles. The extraction of these parameters of nucleus in thissituation can be executed by their only fitting to the most probable values,reproducing the measured in the nuclear reactions spectra and sections. Thisinverse problem of mathematical analysis of its nature is principallyambiguous. Moreover, system of equations, those connecting the number ofexcitable levels and probability of the emission of charge particles areassigned usually within the framework of some assumptions about the mechanismof nuclear reaction and factors, determining the dynamics of the studiedprocess. The verification of these parameters can be partially executed by thecalculation of total gamma-spectra for their different sets. As, in particular,the results of this analysis show, the calculation of the structure of theexcited levels to a change in the form of the energy dependence of radiativestrength functions most likely must be considered to the neutron-bindingenergy. It is not possible to exclude the possibility of that, that alsoradiative, and neutron strength functions depend on the structure of neutronresonance and for the higher excitation energies.

Possibilities to verify the level density and radiative strength functions, extracted from the two-step gamma-cascade intensities