Yield estimation of neutron-rich rare isotopes induced by 200 MeV/u ¹³²Sn beams by using GEANT4

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A so-called "two-step reaction scheme", in which neutron-rich rare isotopes obtained from ISOL are post-accelerated and bombarded on a second target, is employed to estimate the production yields of exotic rare isotopes. The production yields of neutron-rich rare isotope fragments induced by 200 MeV/u ¹³²Sn beams bombarded on a ⁹Be target are estimated with Monte Carlo code, GEANT4. To substantiate the use of GEANT4 for this study, benchmark calculations are done for 80 MeV/u ⁵⁹Co, 95 MeV/u ⁷²Zn, 500 MeV/u ⁹²Mo, and 950 MeV/u ¹³²Sn beams on the ⁹Be target. It is found that ¹³²Sn beams can produce neutron-rich rare isotopes with 45 ≤ Z ≤ 50 more effectively than ²³⁸U beams at the same energy per nucleon.