Based on the dinuclear system model,the synthesis of the predicted double-magic nuclei^(298)Fl and 304120 was investigated via neutron-rich radioactive beam-induced fusion reactions.The reaction^(58)Ca+^(244)Pu is pre...Based on the dinuclear system model,the synthesis of the predicted double-magic nuclei^(298)Fl and 304120 was investigated via neutron-rich radioactive beam-induced fusion reactions.The reaction^(58)Ca+^(244)Pu is predicted to be favorable for producing^(298)Fl with a maximal ER cross section of 0.301 pb.Investigations of the entrance channel effect reveal that the^(244)Pu target is more promising for synthesizing^(298)Fl than the neutron-rich targets^(248)Cm and^(249)Bk,because of the influence of the Coulomb barrier.For the synthesis of 304120,the maximal ER cross section of 0.046 fb emerges in the reaction^(58)V+^(249)Bk,indicating the need for further advancements in both experimental facilities and reaction mechanisms.展开更多
The ^(252)Cf isotope produced at Oak Ridge National Laboratory is a promising target material for the synthesis of new superheavy nuclei through fusion reaction experiments.Within the framework of the dinuclear system...The ^(252)Cf isotope produced at Oak Ridge National Laboratory is a promising target material for the synthesis of new superheavy nuclei through fusion reaction experiments.Within the framework of the dinuclear system model,reaction systems with the ^(252)Cf target and ^(48)Ca,^(45) Sc,^(50)Ti,^(51)v,^(54)Cr,and ^(55) Mn projectiles are investigated for the synthesis of the new isotopes ^(295-297)Og,^(292-294)119,^(297-2991)20,^(298-300)121,^(301-303)122,and ^(302-304)123.The decreasing trend of maximal evaporation residue cross sections with the increasing proton number of the compound nucleus is discussed in the capture,fusion,and survival stages.Additionally,radioactive beam-induced reactions based on the ^(252)Cf target are investigated to reach the predicted neutron shell closure N=184,with the maximal evaporation residue cros section predicted to be 21 fb for synthesizing ^(302)Og.The predicted results fall below the current detection limitation,indicating the necessity for advancement in both accelerator and detection techniques,as well as exploration of alternative reaction mechanisms.展开更多
基金supported by the National Key R&D Program of China(No.2023YFA1606401)the National Natural Science Foundation of China(Nos.12135004,11635003 and 11961141004)the Guangxi Natural Science Foundation(No.2022GXNSFBA035549).
文摘Based on the dinuclear system model,the synthesis of the predicted double-magic nuclei^(298)Fl and 304120 was investigated via neutron-rich radioactive beam-induced fusion reactions.The reaction^(58)Ca+^(244)Pu is predicted to be favorable for producing^(298)Fl with a maximal ER cross section of 0.301 pb.Investigations of the entrance channel effect reveal that the^(244)Pu target is more promising for synthesizing^(298)Fl than the neutron-rich targets^(248)Cm and^(249)Bk,because of the influence of the Coulomb barrier.For the synthesis of 304120,the maximal ER cross section of 0.046 fb emerges in the reaction^(58)V+^(249)Bk,indicating the need for further advancements in both experimental facilities and reaction mechanisms.
基金the National Key R&D Program of China(2023YFA1606401)the National Natural Science Foundation of Chin(12135004,11635003,11961141004)the Natural Science Foundation of Guangxi Province,China(2022GXNSFBA035549)。
文摘The ^(252)Cf isotope produced at Oak Ridge National Laboratory is a promising target material for the synthesis of new superheavy nuclei through fusion reaction experiments.Within the framework of the dinuclear system model,reaction systems with the ^(252)Cf target and ^(48)Ca,^(45) Sc,^(50)Ti,^(51)v,^(54)Cr,and ^(55) Mn projectiles are investigated for the synthesis of the new isotopes ^(295-297)Og,^(292-294)119,^(297-2991)20,^(298-300)121,^(301-303)122,and ^(302-304)123.The decreasing trend of maximal evaporation residue cross sections with the increasing proton number of the compound nucleus is discussed in the capture,fusion,and survival stages.Additionally,radioactive beam-induced reactions based on the ^(252)Cf target are investigated to reach the predicted neutron shell closure N=184,with the maximal evaporation residue cros section predicted to be 21 fb for synthesizing ^(302)Og.The predicted results fall below the current detection limitation,indicating the necessity for advancement in both accelerator and detection techniques,as well as exploration of alternative reaction mechanisms.
