摘要
The production mechanism of heavy neutronrich nuclei is investigated by using the multinucleon transfer reactions of ^(136;148)Xe+^(208)Pb and ^(238)U+^(208)Pb in the framework of a dinuclear system model. The evaporation residual cross sections of target-like fragments are studied with the reaction system ^(148)Xe+^(208)Pb at near barrier energies. The results show that the final isotopic production cross sections in the neutron-deficient side are very sensitive to incident energy while it is not sensitive in the neutron-rich side. Comparing the isotopic production cross sections for the reactions of ^(208)Pb bombarded with stable and radioactive projectiles, we find that neutron-rich radioactive beams can significantly increase the production cross sections of heavy neutron-rich nuclei.
The production mechanism of heavy neutron- rich nuclei is investigated by using the multinucleon transfer reactions of 136,148Xe＋208pb and 238U＋208pb in the framework of a dinuclear system model. The evaporation residual cross sections of target-like fragments are studied with the reaction system 148Xe＋208pb at near barrier energies. The results show that the final isotopic production cross sections in the neutron-deficient side are very sensi- tive to incident energy while it is not sensitive in the neutron-rich side. Comparing the isotopic production cross sections for the reactions of 208pb bombarded with stable and radioactive projectiles, we find that neutron-rich radioactive beams can significantly increase the production cross sections of heavy neutron-rich nuclei.
基金
supported by the National Natural Science Foundation of China under Grants Nos.11635003,11025524 and 11161130520
the National Basic Research Program of China under Grant No.2010CB832903
the European Commission’s 7th Framework Programme(Fp7-PEOPLE-2010-IRSES)under Grant Agreement Project No.269131
the Project funded by China Postdoctoral Science Foundation(Grant No.2016M600956)
