[en] Asymmetry and spatial parity breaking effects in nuclear reaction induced by slow and resonant neutrons on ³⁵Cl nucleus followed by protons emission were analyzed. Effects were obtained applying Flambaum-Sushkov formalism using two-levels approximation. In the computer simulation, different types of target and neutrons incident flux were considered. Obtained results are compared with existing experimental data. Differences between theoretical evaluation, computer modeling and experimental data are explained considering contributions of other open channels.

[en] Molybdenum nucleus has many natural and artificial isotopes important for fundamental and applicative researches. Cross sections, angular correlations and isomer ratios in fast neutrons induced reactions up to 25-30 MeV were evaluated using codes realized by authors as well as dedicated software. Contributions of different nuclear reaction mechanisms in the cross sections were also determined. Parameters of nuclear optical potential, density levels and radius channels were extracted. Theoretical evaluations were compared with existing experimental data. The results of present work were realized in the frame of the fast neutrons scientific program at FLNP basic facilities (IREN and EG5) and are necessary for future experiment preparation.

[en] In the present paper it was calculated angular correlation's in the (n,p) reaction starting from the model of mixing states with different parities. It is supposed that the one S state or one P state of the compound nucleus is formed with definite quantum numbers. Obtained results are applied to the ³⁵Cl(n,p)S³⁵ nuclear reaction. For this reaction the following forward - backward, left - right and parity non - conservation coefficients were obtained. Using these three coefficients we have extracted the weak matrix element. The weak matrix element describe the effect of mixing states with different parities in the compound nucleus. Our results are compared with result from literature and with experimental results obtained in Dubna at IBR-30 reactor for forward - backward coefficient. (author)