Activation measurements of multinucleon transfer cross sections in $^{48}$Ca+Au and $^{40}$Ca+Au reactions at energies near the Coulomb barrier

5 Jul 2025, 11:50
20m
3058 (Санкт-Петербургский Государственный Университет )

3058

Санкт-Петербургский Государственный Университет

Oral Section 2. Experimental and theoretical studies of nuclear reactions. 2. Experimental and theoretical studies of nuclear reactions

Speaker

Aleksei Shakhov (Joint Institute of Nuclear Research, Dubna, Russia)

Description

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).

  1. Yu.E. Penionzhkevich et al., Eur. Phys. J. A 31, 185 (2007);
  2. Resource is based on the Program Grazing ver.9 (2005) code of Aage Winther;
  3. nrv.jinr.ru;
  4. A. K. Azhibekov et al., Eur. Phys. J. A (2023) 59:278.

Primary author

Aleksei Shakhov (Joint Institute of Nuclear Research, Dubna, Russia)

Co-authors

Aidos Azhibekov (Joint Institute of Nuclear Research, Dubna, Russia) Sergey Lukyanov (Joint Institute of Nuclear Research, Dubna, Russia)

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