Charge Evolution for N₂ ⁺ Ion Passing Through Ag Target

Abstract Charge state is a key factor for the ion stopping and energy deposition. It is helpful to understand the physics mechanics for interaction between ion and target by studying the charge state. In this paper, nitrogen molecular ion charge evolution in Ag target is studied. It is shown that the charge state of the trailing ion is oscillating, while the leading ion doesn’t show the similar behavior due to the wake effects aroused by the electronic exciting of the target electron.