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

Abstract

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 ${}^{132}$Sn beams bombarded on a ${}^9$Be 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 ${}^{59}$Co, 95 MeV/u ${}^{72}$Zn, 500 MeV/u ${}^{92}$Mo, and 950 MeV/u ${}^{132}$Sn beams on the ${}^9$Be target. It is found that ${}^{132}$Sn beams can produce neutron-rich rare isotopes with 45 $\le$ Z $\le$ 50 more effectively than ${}^{238}$U beams at the same energy per nucleon.

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