原子核多重碎裂的静态理论I.相变和多重碎裂

Static Theory for Nuclear Multifragmentation I.Phase Transition and Multifrangmentation

在温度、密度和动量相关的平均场下，对有限核１９７Ａｕ，得到了其状态方程的５个不同的相，即液相、汽相、超热液相、超冷汽相和力学不稳定相，当温度Ｔ＝６ＭｅＶ时，在坐标和动量空间对这些相进行了模拟，并采用并合模型对形成的核碎片进行了分类，关联分析表明。

With a density ,temperature ,and momentum dependent mean field,five different phases of nuclear equation of state:the gas,liquid,super heated liquid,super cooled gas and mechanical instability of spinodal phase for 197 Au are described.After performing a simulation in real space and in momentum space for these different phases at finite temperature T=6MeV,all kinds of nuclear clusters are sorted by using the coalescence model.Correlation analysis of the nuclear clusters demonstrates that multifragmentation pattern only comse from the mechanical instability of spinodal phase.