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为了从微观上弄清粘滞性机制,我们从改进的量子分子动力学模型出发从微观上计算核子的平均自由程,以此来探测粘滞性机制。单体粘滞机制起源于粒子与自洽场形成的核表面的碰撞,它与较长的核子平均自由程相联系;而两体粘滞性则是由核子之间的碰撞形成,它与较短的核子平均自由程相联系。本文在改进的量子分子动力学模型基础上计算了入射能为15AMeV的197Au+197Au体系三裂变的三种碎片的质量分布,在没有任何可调参数的情况下,得到与实验符合的每种碎片的质
In order to understand the viscous mechanism from the microscopic point of view, we proceed from the improved quantum molecular dynamics model to calculate the average free path of the nucleus microscopically to detect the viscous mechanism. The monomer viscous mechanism originates from the collisions between the particles and the surface of the nucleus formed by the self-consistent field, which is associated with the longer mean free path of the nuclei. The viscosity of the two bodies is formed by the collision between the nuclei, Short nuclear mean free path associated. Based on the improved quantum molecular dynamics model, the mass distributions of three fragments of the 197Au + 197Au system with an incident energy of 15 AMeV were calculated. Without any adjustable parameters, the experimental data were obtained for each fragment The quality of