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In this work presents the results of activation measurements of the cross sections for the formation of target-like fragments in multinucleon transfer (MNT) reactions in collisions of $^{48}$Ca and $^{40}$Ca nuclei with a $^{197}$Au target nucleus at energies close to the Coulomb barrier. The main attention is paid to the study of the effect of neutron excess in $^{48}$Ca on the characteristics of MNT reactions in comparison with the $^{40}$Ca isotope. The experiments were carried out by the method of activation analysis followed by γ-spectrometric determination of the cross sections of the reaction products [1]. The data obtained demonstrate differences in the probabilities of formation of target-like products in reactions with $^{40}$Ca and $^{48}$Ca projectiles, which indicates a significant effect of neutron excess on the dynamics of MNT processes near the Coulomb barrier. The presented results are compared with theoretical calculations [2][3] and discussed in the context of the mechanisms of nucleon transfer and the synthesis of neutron-rich nuclei [4].
Acknowledgements: This research has been funded by the Science Committee of the Ministry of Science and Higher Education of the Republic of Kazakhstan (Grant No. AP19577048).
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