ION-PICKUP MECHANISM AND TWO-STREAM INSTABILITY IN COMET

摘要

In this paper, we adopted a reasonable particle distribution function and used a simplified judgement to analyze the possibility of the ion-pickup caused by two-stream instibility in cometary tail. On calculation, we get an energy limitation(ΔE1, ΔE2) between the solar wind particles and the cometary particles .When the energy diffference is between ΔE1 and ΔE2, the pickup of ions in the cometary tail is more effective.