Production of neutron-rich heavy nuclei around N = 162 in multinucleon transfer reactions

Abstract

Within the framework of the dinuclear system model, the production mechanism of neutron-rich heavy nuclei around N = 162 has been investigated systematically. The isotopic yields in the multinucleon transfer reaction of ${}^{238}$U + ${}^{248}$Cm was analyzed and compared the available experimental data. Systematics on the production of superheavy nuclei via ${}^{238}$U on ${}^{252,254}$Cf, ${}^{254}$Es and ${}^{257}$Fm is investigated. It is found that the shell effect is of importance in the formation of neutron-rich nuclei around N=162 owing to the enhancement of fission barrier. The fragments in the multinucleon transfer reactions manifest the broad isotopic distribution and are dependent on the beam energy. The polar angles of the fragments tend to the forward emission with increasing the beam energy. The production cross sections of new isotopes are estimated and heavier targets are available for the neutron-rich superheavy nucleus formation. The optimal system and beam energy are proposed for the future experimental measurements.

10 pages, 8 figures

References in corpus (7)

• Formation of superheavy nuclei in cold fusion reactions
• Collision dynamics of two ${}^{238}$U atomic nuclei
• Production of neutron-rich isotopes around N=126 in multinucleon transfer reactions
• Production of heavy and superheavy nuclei in massive fusion reactions
• Systematics on production of superheavy nuclei $Z=119-122$ in fusion-evaporation reactions
• To reach neutron-rich heavy and superheavy nuclei by multinucleon transfer reactions with radioactive isotopes
• Multinucleon transfer dynamics in heavy-ion collisions near Coulomb barrier energies

Cited by in corpus (2)

• Dynamics of light nuclei produced in the massive transfer reactions
• Preequilibrium cluster emission in massive transfer reactions near Coulomb barrier energy