Production of new neutron-rich isotopes with 92≤Z≤100 in multinucleon transfer reactions

Abstract

To explore the optimum conditions for producing new neutron-rich isotopes in the range $92\ensuremath{\le}Z\ensuremath{\le}100$ by multinucleon transfer reactions, $^{86}\mathrm{Kr}+^{248}\mathrm{Cm}, ^{129}\mathrm{Xe}+^{248}\mathrm{Cm}, ^{132}\mathrm{Xe}+^{248}\mathrm{Cm}, ^{136}\mathrm{Xe}+^{248}\mathrm{Cm}$ and $^{238}\mathrm{U}+^{248}\mathrm{Cm}$ systems with bombarding energies around their respective Coulomb barriers are investigated within an improved dinuclear system (DNS) model, combined with the statistical gemini$++$ model. The calculated production cross sections are in a good agreement with experimental data. It is found that, compared with projectiles $^{86}\mathrm{Kr}$ and $^{136}\mathrm{Xe}$, the projectile $^{238}\mathrm{U}$ can produce larger cross sections of neutron-rich nuclei of interest by bombarding the actinide target $^{248}\mathrm{Cm}$. Actinide projectile-target combination seems to be encouraging for the production of neutron-rich isotopes with $92\ensuremath{\le}Z\ensuremath{\le}100$.