Search Results - "Ohnuma, Toshiro"

Radiation Phenomena of Plasma Waves Part 1. Fundamental Radiation Theory by Ohnuma, Toshiro

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Polarized electromagnetic detections by high Tc superconducting antenna by OHNUMA, T

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Particular RF property in a magnetized plasma near the lower hybrid frequency by OHNUMA, T

“…Particular RF properties, that is, potential fields radiated from a localized source, in a magnetized plasma are investigated numerically near the lower hybrid…”
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Radiation Phenomena of Plasma Waves Part 3. Radiation from Finite Sources by Ohnuma, Toshiro

“…Radiation phenomena of plasma waves has been reviewed in three parts, fundamental radiation theory, radiation from point sources, and radiation from finite…”
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Nonlinear Modification of Radiation Patterns of Electron Plasma Waves by Ohnuma, Toshiro

“…Nonlinear modification of radiation patterns of electron plasma waves from a circular planar mesh is observed with an increase of an exciting radio-frequency…”
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Local control of plasmas by focused RF-fields by OHNUMA, T

“…With the use of resonance cone fileds from a ring source, focused RF-fields were experimentally produced in a magnetized plasma. In the focal region, a strong…”
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Simulated Particle Beam Antennas In Space by Toshiro Ohnuma, Masakazu Shimegi

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Observation of nonlinear trajectories of localized RF-energy in an inhomogeneous magnetic field by OHNUMA, T

“…Nonlinear modifications of trajectories of localized RF-energy, so-called resonance cone fields, are observed in an inhomogeneous magnetic field when the…”
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Observation of effects of inhomogeneous magnetic field on resonance cone fields by OHNUMA, T

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Plasma waves excited by modulated line sources below the electron cyclotron frequency by OHNUMA, T, WATANABE, T

“…Spatial investigations of potential fields of plasma waves excited by modulated infinite line sources in an inhomogeneous magneto-plasma are investigated…”
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Improved magnetron sputtering systems using ring-type permanent magnets by OHNUMA, T, ISHII, M, KUROKO, T

“…With the use of a ring-type permanent magnet, spatial profiles of the density profile etc. in the target area are investigated in RF-magnetron plasmas for thin…”
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Electron Waves below the Electron Plasma Frequency without Boundary Effects by Ohnuma, Toshiro, Watanabe, Tsuguhiro, Sanuki, Heiji

“…The propagation of an oblique electron thermal mode without boundary effects below the electron plasma frequency is confirmed experimentally and theoretically…”
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Experimental and theoretical trapped resonance cone fields with a field-leakage in an inhomogeneous magnetoplasma by OHNUMA, T, WATANABE, T

“…Trapped resonance cone fields with a field-leakage in an inhomogeneous magnetized plasma are confirmed experimentally and numerically near the electron plasma…”
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Electromagnetic Cyclotron Harmonic Waves by Ohnuma, Toshiro, Watanabe, Tsuguhiro, Hamamatsu, Kiyotaka

“…Electromagnetic electron cyclotron harmonic waves just below the electron cyclotron harmonics are investigated numerically and experimentally. Backward waves…”
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Numerical System for Electromagnetic Dispersion Relation in Anisotropic Plasmas by Hamamatsu, Kiyotaka, Watanabe, Tsuguhiro, Ohnuma, Toshiro, Nishikawa, Kyoji

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Observation of an Obliquely Growing Mode in an Ion-Beam—Plasma System by Ohnuma, Toshiro, Fujita, Takao, Adachi, Saburo

“…By use of a small launcher in an ion-beam-plasma system, a spatially growing mode, which propagates obliquely to the ion beam, was observed. With ion beams,…”
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Wave-Wave Coupling in Ion Wave Propagation by Ohnuma, Toshiro, Hatta, Yoshisuke

“…Wave-wave coupling among ion waves is investigated, experimentally and theoretically. When two ion waves of different frequencies of f1 and f2 are excited by…”
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Three-Dimensional Propagations of Electron Bernstein Waves by Ohnuma, Toshiro, Ohmori, Shingo, Ohnuki, Shigeo, Adachi, Saburo, Fujita, Takao, Hirayama, Koichi, Ogiwara, Yutaka

“…Electron Bernstein waves were found to propagate over a wide (ray) range of directions with respect to a localized launcher, although the wave propagation is…”
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Transformation of Longitudinal Wave into Transverse Wave by Ohnuma, Toshiro, Hatta, Yoshisuke

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Instability of Three- or Four-Component (Electron, Ion and Beam) Plasma Systems by Ohnuma, Toshiro, Hatta, Yoshisuke

“…The instability of a beam-plasma system with no magnetic field is investigated mainly by means of the graphical analysis of the dispersion equation. Unstable…”
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