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A method is proposed to determine the one-neutron S_n or two-neutron S_(2n) separation energy of neutronrich isotopes.Relationships between S_n(S_(2n)) and isotopic cross sections have been deduced from an empirical formula,i.e.,the cross section of an isotope exponentially depends on the average binding energy per nucleon B/A.The proposed relationships have been verified using the neutron-rich copper isotopes measured in the 64 A Me V ~(86)Kr+~9Be reaction.S_n,S_(2n),and B/A for the very neutron-rich ~(77,78,79)Cu isotopes are determined from the proposed correlations.It is also proposed that the correlations between S_n,S_(2n) and isotopic cross sections can be used to find the location of neutron drip line isotopes.
A method is proposed to determine the one-neutron S_n or two-neutron S_ (2n) separation energy of neutronrich isotopes. Relationships between S_n (S_ (2n)) and isotopic cross sections have been deduced from an empirical formula, ie, the cross section of an isotope exponentially depends on the average binding energy per nucleon B / A. The proposed relationships have been verified using the neutron-rich copper isotopes measured in the 64 A Me V ~ (86) Kr + ~ 9Be reaction.S_n, S_ ( 2n), and B / A for the very neutron-rich ~ (77,78,79) Cu isotopes are determined from the proposed correlations.It is also proposed that the correlations between S_n, S_ (2n) and isotopic cross sections can be used to find the location of neutron drip line isotopes.