Abstract
Heavy-ion-induced projectile fragmentation reactions at Fermi energies are of interest to investigate the properties of nuclei far from the valley of stability and are useful for various applications. It is therefore of interest to understand in detail the production mechanism. Here we treat such reactions in a microscopic approach, which consists of several steps: initialization of ground states of the colliding nuclei, dynamical evolution until the freeze-out point where the primary fragments can be identified, calculation of the excitation energy of the primary fragments, and their de-excitation by emission of particles and radiation. For the dynamical evolution we use a Boltzmann–Vlasov type transport method, and for the de-excitation a statistical multi-fragmentation description. We apply this approach to collisions of light projectile nuclei on various target, and calculate isotope distributions and velocity spectra of the produced isotopes. Here we compare the results of our calculations to experimental data for collisions of 22Ne beams of 40 A MeV on targets of 181Ta and 9Be.
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ACKNOWLEDGMENTS
The authors thank A. Botvina for providing us the computer code SMM. Authors thank Drs. A.G. Artukh (deceased) and Yu. M. Sereda for interesting discussions and Prof. I.V. Puzynin and Dr. E. Ayryan for interest in this work and valuable discussions.
Funding
This work was supported (T.M. and E.B.) by RFBR and MECSS under Grant no. 20-51-44001.
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Mikhailova, T.I., Erdemchimeg, B., Di Toro, M. et al. Characteristics of Heavy-Ion Fragmentation Reactions at Fermi Energies. Phys. Part. Nuclei 54, 510–516 (2023). https://doi.org/10.1134/S106377962303022X
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DOI: https://doi.org/10.1134/S106377962303022X