连续模型处理高剥离态离子在金属表面的能量获得

Energy Gains of Highly Charged Ions before Metal Surfaces within a Continuum Model

当高剥离态离子接近清洁金属表面时，表面上的电子由于强库仑相互作用会从金属表面转移到带有高电荷的离子上．这个电子转移过程可以用一速率方程确定，其中速率常数与高剥离态离子所带净电荷数，以及离子与金属表面的距离有关．由于金属表面的镜象势的作用，高剥离态离子在金属表面附近会受到加速作用而获得能量．本文采用经典镜象势，用数值方法处理了确定电子转移的速率方程，计算了高剥离态离子在金属表面的能量获得，计算结果与两组实验数据比较吻合．

The electronic transfer from a metal surface to a highly charged ion is modeled by a simple continuous process. The energy gains, caused by the attraction of the image charge. are calcuated within a classical image potential.The results are consistent with recent two experiments for ions with charges up to q=80.