Production of neutron-rich isotopes around $N=126$ in multinucleon transfer reactions

The multinucleon transfer reaction has been investigated within the dinuclear system model. The nucleon transfer is coupled to the dissipation of relative motion energy and angular momentum by solving a set of microscopically derived master equations. A barrier distribution approach is implemented in the model in order to include the contributions of different orientations and dynamical effects. The available data of fragment production via multinucleon transfer reactions could be understood with the model for the reactions of ${}^{136}\mathrm{Xe}+{}^{198}\mathrm{Pt}/{}^{208}\mathrm{Pb}$ near Coulomb barrier energies. It is found that the production of heavy neutron-rich nuclei weakly depends on the incident energy. However, the yields of proton-rich nuclei increase with the incident energy.

Figure 1

Driving potential as a function of mass asymmetry in the reaction of ${}^{136}\mathrm{Xe}+{}^{208}\mathrm{Pb}$ at different orientations.

Figure 2

Mass distributions of primary and secondary fragments in the transfer reaction of ${}^{136}\mathrm{Xe}+{}^{208}\mathrm{Pb}$ at the incident energy of 450 MeV and compared with the available data [17].

Figure 3

Orientation effects on the fragment distributions in transfer reactions and compared with the available data from Dubna [16].

Figure 4

Production of lead isotopes in the ${}^{136}\mathrm{Xe}+{}^{208}\mathrm{Pb}$ reaction at the c.m. incident energies of 450 and 526 MeV.

Figure 5

Same as in Fig. 4, but for the isotone distribution of $N=126$.

Figure 6

Isotopic production of Os, Au, Hg, and Tl in the ${}^{136}\mathrm{Xe}+{}^{208}\mathrm{Pb}$ reaction at an energy of 450 MeV.

Figure 7

Same as in Fig. 6, but for the isotopes of Bi, Po, At, and Rn.

Figure 8

Incident energy dependence on the production of isotopes in the transfer reaction of ${}^{136}\mathrm{Xe}+{}^{208}\mathrm{Pb}$.

Figure 9

Mass and charge distributions of fragments produced in multinucleon transfer reaction of ${}^{136}\mathrm{Xe}+{}^{198}\mathrm{Pt}$.