On the double-grid excitation of linear and nonlinear ion-acoustic waves

A series of experiments has been performed in which the mechanism for the excitation of linear and nonlinear ion-acoustic waves from a structure consisting of two large parallel fine-mesh grid structures are considered. It is observed that the structure will launch a burst of ions through a velocity modulation mechanism if the two grids are sufficiently close together. A klystron-bunching model that was proposed previously appears to be valid for this launching mechanism.<
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