Phase-Space Holes in an Electron-Beam-PlasmaReport as inadecuate

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1 Radiochemistry Research Laboratory 2 Department of Physics

Abstract : It is shown in an electron-beam-plasma system that phase-space holes evolve dynamically in electron time scales from appearance to collapse. The holes are synchronized with a wave packet dominated by a beam mode, and their velocity radii depend on the packet crest amplitudes. This suggests that the holes are induced by a self-trapping phenomenon. It seems from the observed images that the trapped-beam is hard to be detrapped while the packet grows linearly, but easy to be done after that.

Keywords : self-trapping electron-beam-plasma two-stream instability phase-space hole

Author: Tsuyoshi Takeda - Yamagiwa Keiichiro -



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