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Abstract |
When the ion sheath instability is excited, a local structure in the potential profile is found and the local structure in the ion saturation current profiles is observed near the sheath edge and insi...de the sheath for almost all bias voltages of the separation grid. The correlation between the local structure and the ion sheath instability is examined. The length between the local structure formed near the sheath edge in the ion saturation current profiles in the both sides is found to be in inverse proportion to the frequency of the instability. Furthermore, the experimental results are also compared with the virtual anode oscillations.show more
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