Binding energies of near proton-drip line Z=22-28 isotopes determined from measured isotopic cross section distributions

作者：Ma, Chun-Wang^*; Song, Yi-Dan; Wei, Hui-Ling

来源：Science China Physics,Mechanics & Astronomy, 2019, 62(1): 012013.

DOI：10.1007/s11433-018-9256-8

• proton drip line
• binding energy
• mirror nuclei
• scaling phenomenon

A new method is proposed to determine the binding energy (B) of near proton-drip line isotopes from isotopic cross section distribution. To determine B of Z = 22-28 isotopes (with T-z = -2 and -5/2), the lack of cross sections for proton-rich isotopes in the 345A MeV Kr-78 + Be-9 is overcome by predicting the proton-rich isotopes from a newly discovered scaling phenomenon found in the proton-rich isotopes measured in the 140A MeV Ca-40;48(Ni-58;64) + Be-9 reactions. The cross sections for proton-rich isotopes are verified to exponentially depend on the average binding energy per nucleon, based on which B of the Z=22-28 isotopes with T-z = -2 and -5/2 are determined from cross sections. The determined B of the isotopes are justified from obeying the scaling phenomenon of the difference between the mass of mirror nuclei. The cross sections for the Z = 22-28 isotopes with T-z = -1 and -3/2, which in potential can be experimentally studied in mass storage ring, are also predicted.

• 出版日期2019-1
• 单位河南师范大学