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研究了快速C60 离子团在固体中穿行时的库仑爆炸过程 .假定离子团中离子之间位置矢量的取向是随机的 ,并且采用球壳模型描述C60 离子团的结构 .借助于线性介电响应理论和等离子 极点近似介电函数 ,推导出C60 离子团自能的解析表达式 .通过数值求解描述离子团半径变化的运动方程 ,可以发现自能中的“尾效应”可以降低C60 离子团的库仑爆炸速度 ,甚至可以稳定C60 离子团的结构
The Coulomb explosion process of a fast C60 ion cluster traveling through a solid was investigated. It is assumed that the orientation vector of ions in the ion cluster is random and the structure of the C60 ion cluster is described by the spherical shell model. By means of the linear dielectric response theory And the approximate dielectric function of the plasma pole, the analytical expression for the self-energy of the C60 ion group is deduced. By solving the equation of motion describing the radius variation of the ion group numerically, it can be found that the “tail effect” in self-energy can reduce the Coulomb explosion Speed, can even stabilize the structure of the C60 ion group