标题： 一种研究弱结合系统中共振现象的新理论方法 显示英文标题

标题： A novel theoretical approach for the study of resonances in weakly bound systems

摘要： 在本文中，提出了一种新的理论方案，通过使用等谱势来研究弱结合核系统中的共振能级。 在此方案中，构建了一个新的势场，该势场与原始的浅势阱势严格等谱，并具有更准确和更容易计算共振的特性。 该方法的有效性已通过其在中子丰富同位素$^A$C（$\equiv ^{A-2}$C+n+n）中第一个$0^+$共振的应用进行了验证，在A=18、20的三体团簇模型中。 显示英文摘要

摘要： In this paper, a novel theoretical scheme is presented to investigate resonant levels in weakly bound nuclear systems by the use of isospectral potentials. In this scheme, a new potential is constructed which is strictly isospectral with the original shallow-well potential and has properties that are desirable to calculate resonances more accurately and easier. Effectiveness of the method has been had been demonstrated in terms of its application to the first $0^+$ resonances in the neutron-rich isotopes $^A$C ($\equiv ^{A-2}$C+n+n) in the three-body cluster model for A=18, 20.