Deformed Potential Energy of 263Db in a Generalized Liquid Drop Model

陈宝秋; 马中玉; 赵耀林

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Deformed Potential Energy of 263Db in a Generalized Liquid Drop Model

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The macroscopic deformed potential energy for super-heavy nuclei 263 Db,which governs the entrance and alpha decay channels,is determined within a generalized liquid drop model(GLDM).A quasi-molecular shape is as sumed in the GLDM,which includes volume-,surface-,and Coulomb-energies,proximity effects,mass asymmetry,and an accurate nuclear radius.The microscopic single particle energies are derived from a shell model in an axially deformed Woods-Saxon potential with a quasi-molecular shape.The shell correction is calculated by the Strutinsky method.The total deformed potential energy of a nucleus can be calculated by the macro-microscopic method as the summation of the liquid-drop energy and the Strutinsky shell correction.The theory is applied to predict the deformed potential energy of the experiment 22Ne + 241Am → 263Db* → 259Db + 4n,which was performed on the Heavy Ion Accelerator in Lanzhou.It is found that the neck in the quasi-molecular shape is responsible for the deep valley of the fusion barrier due to the shell corrections.In the cold fusion path,the double-hump fusion barrier is predicted by the shell correction and complete fusion events may occur.

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《中国物理快报：英文版》 |2003年第11期|1936-1939|共4页
作者
陈宝秋; 马中玉; 赵耀林;
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Center of Theoretical Nuclear Physics,National Laboratory of Heavy Ion Accelerator of Lanzhou,Lanzhou 730000;

China Institute of Atomic Energy,Beijing 102413;

Center of Theoretical Nuclear Physics,National Laboratory of Heavy Ion Accelerator of Lanzhou,Lanzhou 730000;

China Institute of Atomic Energy,Beijing 102413;

Institute of Theoretical Physics,Chinese Academy of Sciences,Beijing 100080;

China Institute of Atomic Energy,Beijing 102413;

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Deformed Potential Energy of 263Db in a Generalized Liquid Drop Model

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