【摘要】 用分子动力学模拟方法研究了C60团簇与稠密等离子体的相互作用。在线性化的伏拉索夫-泊松理论框架下,借助于经典的等离子体介电函数,推导了团簇的阻止本领的一般表达式。用数值方法求解了团中离子的运动方程,研究了团簇的库仑爆炸过程,讨论了入射速度、等离子体密度和电子温度对阻止本领和库仑爆炸的影响。结果发现尾流效应降低了C60团簇离子的库仑爆炸速度,甚至压缩了团簇的结构,在高速、低密、高温的情况下库仑爆炸进行得更快。更多还原

【Abstract】 The interaction between C60 clusters and dense plasmas has been studied using the moleculardynamic simulation(MDS).In the framework of linearized Vlasov-Poisson theory,the analytical expression ofstopping power of the cluster is obtained with the classic plasma dielectric function.The Coulomb explosions ofthe cluster are studied by solving the motion equations.The effect of projectile velocity,plasma density andelectron temperature on stopping power and Coulomb explosion of the cluster are discussed,respectively.Theresults show that the wake effects can reduce the speed of Coulomb explosions,and even stabilize the clusterstructure,the Coulomb explosion will proceed faster in the situations of high velocity,low plasma density or highplasma temperature.更多还原