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Electrostatic ion-cyclotron instabilities modified by the parallel and perpendicular plasma flow velocity shears
Toshiro Kaneko, Hirotaka Saito, Hokuto Tsunoyama +1
The external and independent control of plasma flow velocity shears parallel and perpendicular to magnetic field lines is realized using segmented collisionless-plasma sources. Ele…
Fluctuation-phase relation between positive and negative ions on pair-plasma electrostatic waves
Wataru Oohara, Daisuke Date, Rikizo Hatakeyama
Three kinds of electrostatic modes are experimentally observed to propagate along magnetic-field lines for the first time in the pair-ion plasma consisting of only positive and neg…
Polarization reversal of electron cyclotron wave due to radial boundary condition
Kazunori Takahashi, Toshiro Kaneko, Rikizo Hatakeyama
Propagation and absorption of electromagnetic waves with electron cyclotron resonance (ECR) frequency are experimentally and theoretically investigated for the case of inhomogeneou…
Plasma production by helicon waves with single mode number in low magnetic fields
Genta Sato, Wataru Oohara, Rikizo Hatakeyama
Radio-frequency discharges are performed in low magnetic fields (0-10 mT) using three types of helicon-wave exciting antennas with the azimuthal mode number of = 1. The most…