固体Al中Si团簇离子的特殊行为
Peculiar Behavior of Si Cluster Ions in Solid Al
摘要：
在固体Al等离子体中以~0.22c（c：光速）速度运动的Si团簇中发现了一种特殊的离子行为：在团簇中以几埃的距离紧密地运动在向前运动的Si离子后面的Si离子感受到向前运动的Si产生的尾流场。后部Si上的相互作用势可以在纵向移动方向上平衡减速向后力本身与前部Si的加速向前力。向前的Si将正常减速。然而，在Si团簇与高密度Al等离子体相互作用过程中，紧随其后的后部Si的减速会显著减小，并且后部Si可能会赶上并超过团簇中向前移动的Si。
英文摘要：
A peculiar ion behavior is found in a Si cluster, moving with a speed of ~0.22c (c: speed of light) in a solid Al plasma: the Si ion, moving behind the forward moving Si ion closely in a several angstrom distance in the cluster, feels the wake field generated by the forward Si. The interaction potential on the rear Si may balance the deceleration backward force by itself with the acceleration forward force by the forward Si in the longitudinal moving direction. The forward Si would be decelerated normally. However, the deceleration of the rear Si, moving behind closely, would be reduced significantly, and the rear Si may catch up and overtake the forward moving Si in the cluster during the Si cluster interaction with the high-density Al plasma.
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