Electrostatic Shocks Excited by Velocity Modulation of an Ion Beam in a Plasma

Takuma Gohda, Seiji Ishiguro, Satoru Iizuka, Noriyoshi Sato

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


The nonlinear behavior of electrostatic shocks excited by velocity-modulated ion beam in magnetized plasma column was investigated for Q-machine experiment by computer simulation. The perturbations grew spatially in the beam velocity modulation with saturation due to an ion bunching of the beam. An electrostatic shock was formed with an increase in modulation ratio which was accompanied with steepening of the propagating front. The results show that velocity modulation was effective for excitation of electrostatic shocks in the Q-machine plasma with finite Landau damping.

Original languageEnglish
Article number045002
Pages (from-to)450021-450024
Number of pages4
JournalPhysical Review Letters
Issue number4
Publication statusPublished - 2004 Jan 30

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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