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首页> 外文期刊>Nuclear Physics, A: Journal Devoted to the Experimental Study of the Fundamental Constituents of Matter and Their Actions >Improved isospin dependent quantum molecular dynamics model and its application to fusion reactions near Coulomb barrier
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Improved isospin dependent quantum molecular dynamics model and its application to fusion reactions near Coulomb barrier

机译：改进的依赖于同位旋的量子分子动力学模型及其在库仑势垒附近的聚变反应中的应用

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The isospin dependent quantum molecular dynamics model is developed by introducing switch function method which deals with correctly the surface interaction and shell effect in the process of projectile and target approaching. The fusion excitation functions for Ca-40 + Ca-40, Ca-40 + Ca-48 and Ca-48 + 48Ca at energies in the vicinity of the Coulomb barrier are studied. The experimental data of the fusion cross sections for these three systems can be regenerated very well. It is found that the fusion cross sections for neutron-rich system increase obviously. The static and dynamical Coulomb barriers are studied in order to clarify the phenomena. The neutron to proton ratio (N/Z ratio) at neck region is also studied, which apparently presents isospin effects of projectile-target combinations. (c) 2005 Elsevier B.V. All rights reserved.
机译：通过引入开关函数方法建立了等旋异构的量子分子动力学模型，该方法能正确处理弹丸和目标逼近过程中的表面相互作用和壳效应。研究了在库仑势垒附近的能量下Ca-40 + Ca-40，Ca-40 + Ca-48和Ca-48 + 48Ca的聚变激发函数。这三个系统的融合截面的实验数据可以很好地再生。发现富中子系统的聚变截面明显增加。为了澄清现象，研究了静态和动态库仑势垒。还研究了颈部区域的中子与质子的比率（N / Z比率），这显然表现出射弹-目标组合的同位旋效应。 （c）2005 Elsevier B.V.保留所有权利。

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