Residue Coulomb interaction among isobars and its influence in symmetry energy of neutron-rich fragment
作者： Hui-Ling Wei , Yan-Li Zhang , Shan-Shan Wang , Shan-Shan Wang , Chun-Wang Ma
DOI: 10.1088/0253-6102/64/3/334
关键词:
摘要: The residue Coulomb interaction (RCI), which affects the result of symmetry-energy coefficient neutronrich nucleus in isobaric yield ratio (IYR) method, is difficult to be determined. Four RCI approximations are investigated: (i) M1-RCI adopting a(c)/T (the energy temperature) determined from IYR mirror-nucleus fragments; (ii) M2-RCI by fitting difference between IYRs; (iii) M3-RCI standard at a temperature T = 2 MeV; and (iv) Neglecting among isobars. M1-, M2- no larger than 0.4. In particular, very close zero. effects a(sym)/T fragment also studied. M1- M4-a(sym)/T found lower upper limitations a(sym)/T, respectively. M2-a(sym)/T overlaps M4-a(sym)/T, indicates that negligible three isobars can neglected. relative consistent low values M3-a(sym)/T (7.5 +/- 2.5) neutron-rich
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