Production of p-rich nuclei with Z=20-25 based on radioactive ion beams

Within the framework of isospin-dependent Boltzmann-Langevin model, the production cross sections of proton-rich nuclei with Z = 20 - 25 are investigated. According to the reaction results for different isospin of projectiles Ni-48, Ni-49, and Ni-50, proton-rich fragments tend to be more easily produced in reactions with the proton-rich projectile Ni-48. The production cross sections of the unknown nuclei in the vicinity of the projectile are sensitive to incident energy. It is observed that incident energy of 345 MeV/u is appropriate for producing proton-rich nuclei with Z = 20 - 25. In projectile fragmentation reactions based on the radioactive ion beam of Ni-48 at 345 MeV/u, several unknown proton-rich nuclei near the proton drip line are generated in the simulations. All these new nuclei are near-projectile elements near Z = 28. The production cross sections of the new nuclei Ca-34, (SC)-S-37,38, Ti-38, V-40,V-41,V-42, Cr-40,Cr-41, and Mn-42,Mn-43,Mn-44,Mn-45 are in the range of 10(-2) - 10(2) mb. Hence, projectile fragmentation of radioactive ion beams of Ni is a potential method for generating new proton-rich nuclei with Z = 20 - 25.

Automated summary

Within the framework of the isospin-dependent Boltzmann-Langevin model, the production of proton-rich nuclei with Z = 20 - 25 is investigated. It is found that proton-rich fragments are more easily produced in reactions with the proton-rich projectile Ni-48, and the production cross sections of unknown nuclei near the projectile are sensitive to incident energy. Simulations show that projectile fragmentation reactions of Ni radioactive ion beams have the potential to generate new proton-rich nuclei with Z = 20 - 25.