Experimental determination of one-and two-neutron separation energies for neutron-rich copper isotopes  

作　　者：于勉 魏慧玲 宋一丹 马春旺 

机构地区：[1]Institute of Particle and Nuclear Physics,Henan Normal University [2]School of Biomedical Engineering,Xinxiang Medical University [3]Shanghai Institute of Applied Physics,Chinese Academy of Sciences

出　　处：《Chinese Physics C》2017年第9期79-82,共4页中国物理C（英文版）

基　　金：Supported by Program for Science and Technology Innovation Talents at Universities of Henan Province(13HASTIT046);Natural and Science Foundation in Henan Province(162300410179);Program for the Excellent Youth at Henan Normal University(154100510007);the support from the Creative Experimental Project of National Undergraduate Students(CEPNU 201510476017)

摘　　要：A method is proposed to determine the one-neutron Sn or two-neutron S2n separation energy of neutron- rich isotopes. Relationships between Sn （S2n） 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 64A MeV S6Kr 9Be reaction. Sn, S2n, and B/A for the very neutron-rich 77,78,79Cu isotopes are determined from the proposed correlations. It is also proposed that the correlations between Sn, S2n 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 Sn or two-neutron S2n separation energy of neutron- rich isotopes. Relationships between Sn （S2n） 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 64A MeV S6Kr 9Be reaction. Sn, S2n, and B/A for the very neutron-rich 77,78,79Cu isotopes are determined from the proposed correlations. It is also proposed that the correlations between Sn, S2n and isotopic cross sections can be used to find the location of neutron drip line isotopes.

关 键 词：neutron separation energy neutron-drip line neutron-rich isotope 

分 类 号：O571.5[理学—粒子物理与原子核物理]