Two-step transfer mechanisms in the charge-exchange reaction Ca 40 (O 18, F 18) K 40 at 275 MeV

Urazbekov B. Burtebayev N. Cappuzzello F. Carbone D. Cavallaro M. Colonna M. Gargano A. Spatafora A.
December 2023 American Physical Society

Physical Review C
2023 #108 Issue 6

The nuclear collision O18+Ca40 at 275 MeV is theoretically studied in the elastic, inelastic, one-nucleon transfer, and charge-exchange channels. The elastic scattering channel is treated within the optical model framework with the help of semimicroscopic double folding potentials, which are constructed by using the realistic nuclear matter densities obtained within the Hartree-Fock-Bogoliubov method, while the distorted wave Born approximation method is adopted to calculate differential cross sections for the other channels. The charge exchange nuclear reaction Ca40(O18, F18)K40 is analyzed by assuming the two-step transfer mechanisms, namely by considering a succession of proton-neutron pickup-stripping processes. Large-scale shell-model calculations are employed to compute the spectroscopic amplitudes, needed in our approach. When compared to the available experimental angular distributions, the obtained results show that the two-step transfer mechanisms play a relevant role in the description of the Ca40(O18, F18)K40 reaction and need to be accounted for in any accurate analysis of the measured cross section.

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Department of Nuclear Physics and Nanotechnology, L N Gumilyov Eurasian National University, Satpayev Str. 2, Astana, 010008, Kazakhstan
Institute of Nuclear Physics, Laboratory of Low Energy Reactions, Ibragimov Str. 1, Almaty, 050032, Kazakhstan
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali Del Sud, Via S. Sofia, 62, Catania, 95123, Italy
Dipartimento di Fisica e Astronomia ettore Majorana, Università di Catania, Via S. Sofia, 64, Catania, 95123, Italy
Istituto Nazionale di Fisica Nucleare, Complesso Universitario di Monte S.Angelo, Via Cintia, Napoli, I-80126, Italy

Department of Nuclear Physics and Nanotechnology
Institute of Nuclear Physics
Istituto Nazionale di Fisica Nucleare
Dipartimento di Fisica e Astronomia ettore Majorana
Istituto Nazionale di Fisica Nucleare

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