Nuclear mass is a fundamental property of nuclear physics and a necessary input in nuclear astrophysics.Owing to the complexity of atomic nuclei and nonperturbative strong interactions,conventional physical models can...Nuclear mass is a fundamental property of nuclear physics and a necessary input in nuclear astrophysics.Owing to the complexity of atomic nuclei and nonperturbative strong interactions,conventional physical models cannot completely describe nuclear binding energies.In this study,the mass formula was improved by considering an additional term from the Fermi gas model.All nuclear masses in the Atomic Mass Evaluation Database were reproduced with a root-mean-square deviation(RMSD)of -1.86 MeV(1.92 MeV).The new mass formula exhibits good performance in the neutron-rich nuclear region.The RMSD decreases to 0.393 MeV when the ratio of the neutron number to the proton number is≥1.6.展开更多
The study on the evolution of universe and heavy-ion collisions gives rise to a new research field in nuclear physics: the phase transition in nuclear matter and finite nuclei. At extremely high density and/or tempera...The study on the evolution of universe and heavy-ion collisions gives rise to a new research field in nuclear physics: the phase transition in nuclear matter and finite nuclei. At extremely high density and/or temperature, nucleons (hadrons) may dissolve into quarkgluon plasma ( QGP ) which is called quark deconfinement transition. At low density and medium temperature, the nucleon system may experience liquid-gas phase transition.展开更多
基金supported by the National Natural Science Foundation of China(Nos.12175199 and U2267205)a ZSTU intramural grant(No.22062267-Y).
文摘Nuclear mass is a fundamental property of nuclear physics and a necessary input in nuclear astrophysics.Owing to the complexity of atomic nuclei and nonperturbative strong interactions,conventional physical models cannot completely describe nuclear binding energies.In this study,the mass formula was improved by considering an additional term from the Fermi gas model.All nuclear masses in the Atomic Mass Evaluation Database were reproduced with a root-mean-square deviation(RMSD)of -1.86 MeV(1.92 MeV).The new mass formula exhibits good performance in the neutron-rich nuclear region.The RMSD decreases to 0.393 MeV when the ratio of the neutron number to the proton number is≥1.6.
基金Project supported by the National Natural Science Foundation of China.
文摘The study on the evolution of universe and heavy-ion collisions gives rise to a new research field in nuclear physics: the phase transition in nuclear matter and finite nuclei. At extremely high density and/or temperature, nucleons (hadrons) may dissolve into quarkgluon plasma ( QGP ) which is called quark deconfinement transition. At low density and medium temperature, the nucleon system may experience liquid-gas phase transition.
