Search Results - "Kiwamoto, Yasuhito"

Dynamics of two-sign point vortices in positive and negative temperature states by Yatsuyanagi, Yuichi, Kiwamoto, Yasuhito, Tomita, Hiroyuki, Sano, Mitsusada M, Yoshida, Takeshi, Ebisuzaki, Toshikazu

“…Dynamics of two-sign point vortices in two-dimensional circular boundary is examined by numerical simulations with MDGRAPE-2. The vortex system is…”
Get full text

Relaxation of azimuthal flow pattern from ring to bell shape through two-dimensional turbulence triggered by diocotron instability by KAWAI, Yosuke, KIWAMOTO, Yasuhito, ITO, Kiyokazu, SANPEI, Akio, SOGA, Yukihiro, AOKI, Jun, ITOH, Kimitaka

“…Experimentally observed dynamics of vortex patches, as generated by the diocotron instability in a magnetized pure electron plasma, is examined in terms of the…”
Get full text

Field Analysis of Two-Dimensional Dynamics of Non-neutral Plasma by Imaging Diagnostics and Examination by Sector Probing by Ito, Kiyokazu, Kiwamoto, Yasuhito, Sanpei, Akio

“…The linear response of the luminosity of the charge-coupled-device (CCD) camera image to the electron-flux distribution on the phosphor screen is demonstrated…”
Get full text

High-Fidelity Optical Transfer System for Two Dimensional Imaging of Density Distribution of a Pure Electron Plasma by Aoki, Jun, Kiwamoto, Yasuhito, Soga, Yukihiro, Sanpei, Akio

Get full text

Equilibrium density distribution of a two-species plasma with a single sign of charge by KIWAMOTO, Yasuhito, MOHRI, Akihiro, FUJIWARA, Masami

“…The equilibrium density distribution of a nonneutral plasma consisting of two species of particles is studied theoretically on a basis of a cold two-fluid…”
Get full text

Novel Application of Electron Vortex Dynamics to the Alignment of Magnetic and Cylinder Axes by Aoki, Jun, Kiwamoto, Yasuhito, Soga, Yukihiro, Sanpei, Akio

Get full text

Confinement of Nonneutral Plasmas in a Trap Composed of a Cusped Magnetic Field and an Electrostatic Octapole Field by Akihiro Mohri, Akihiro Mohri, Tetsumori Yuyama, Tetsumori Yuyama, Yasuhito Kiwamoto, Yasuhito Kiwamoto, Yohei Yamazawa, Yohei Yamazawa, Toshinori Michishita, Toshinori Michishita

“…The field configuration formed by the superposition of a cusped magnetic field and an electrostatic octapole field provides a closed system of confinement for…”
Get full text

Accelerated merging of electron vortices in background vorticity by KIWAMOTO, Y, ITO, K, SANPEI, A, MOHRI, A, YUYAMA, T, MICHISHITA, T

“…We report new features observed in two-dimensional interactions of discrete vortices either isolated in vacuum or immersed in a background vorticity. The…”
Get full text

Generation of vorticity hole surrounding a point vortex in a nonneutral plasma by SANPEI, Akio, KIWAMOTO, Yasuhito, ITO, Kiyokazu

Get full text

Observation of a radial current at a Plug/Barrier cell in GAMMA10 by KAJIWARA, Ken, SAITO, Teruo, TATEMATSU, Yoshinori, KIWAMOTO, Yasuhito, ABE, Hiraku, ITO, Kiyokazu, ISHIKAWA, Masao, ISHII, Kameo, YATSU, Kiyoshi

“…This paper presents a picture of current flow relevant to the plug/barrier cell and an end plate installed on the end wall of the GAMMA 10 tandem mirror…”
Get full text

Current balance at an endplate of the GAMMA10 tandem mirror by KAJIWARA, K, SAITO, T, KIWAMOTO, Y, TATEMATSU, Y, YOSHIMURA, Y, TAKAHASHI, T, MIYAUE, H, ABE, H, KIKUCHI, Y, TAMANO, T

“…Mesh bias experiments, in which secondary electron emission from an endplate is suppressed, suggest that simple balance between an end loss electron current…”
Get full text

Effects of anisotropy of end loss electrons on axial potential profile and electron transport in the end region of a tandem mirror by SAITO, T, TATEMATSU, Y, KIWAMOTO, Y, MIYAUE, H, YOSHIMURA, Y, TAMANO, T, YATSU, K

“…Temperature of end loss electrons is a base factor in data analysis of an axial potential profile and electron transport in an end region of a tandem mirror…”
Get full text

Effects of Yushmanov-trapped particles and anisotropy of velocity distribution on the potential formation in the end region of a tandem mirror by TATEMATSU, Y, KIWAMOTO, Y, SAITO, T, TAMANO, T

“…Theoretical analyses are made on the structure of the potential distribution along open field lines in a plasma where the velocity distributions of particles…”
Get full text

Axial and radial potential distributions in the GAMMA10 tandem mirror by YOSHIMURA, Y, SAITO, T, ISHII, K, TAMANO, T, KIWAMOTO, Y, TATEMATSU, Y, TAKAHASHI, T, KAJIWARA, K, KURATA, M, SAKAKIBARA, M, ABE, H, MIYAUE, H

“…Axial and radial profiles of plasma potentials in the GAMMA10 tandem mirror are studied by use of an array of Langmuir probes. Application of fundamental ECRH…”
Get full text

On the electrostatic potential profile determined from ion endloss spectrum by KATANUMA, I, ISHII, K, KIWAMOTO, Y, TAKAHASHI, T, GOTO, T, TATEMATSU, Y, SAITO, T, YATSU, K, TAMANO, T

“…The electrostatic potential profile in the outer region of a tandem mirror is calculated by analyzing the ion endloss data which were obtained experimentally…”
Get full text

Potential distribution in the end region of the GAMMA10 tandem mirror associated with electron flow control by YOSHIMURA, Y, SAITO, T, KIWAMOTO, Y, TATEMATSU, Y, KAJIWARA, K, MIYAUE, H, ABE, H, TAMANO, T

“…Potential distribution in an end region of the GAMMA10 tandem mirror is investigated associated with experiments for control of an electron flow to a floating…”
Get full text

Validity of a model electron distribution function in an end region of a tandem mirror by KAJIWARA, K, SAITO, T, MIYAUE, H, TATEMATSU, Y, KIWAMOTO, Y, TAKAHASHI, T, ABE, H, KIKUCHI, Y, TAMANO, T, YATSU, K

Get full text

Study of potential formation in an open magnetic field configuration by KURIHARA, K, KIWAMOTO, Y, SAITO, T, YATSU, K, MIYOSHI, S

“…A theoretical model is developed on the electrostatic potential which is formed during fundamental electron cyclotron resonance heating in an end region of a…”
Get full text

Energy analysis of ECRH-induced end-loss warm electrons in a tandem mirror by KURIHARA, K, SAITO, T, KIWAMOTO, Y, MIYOSHI, S

“…The amount of an end-loss flux of warm electrons and its energy spectrum are studied by using an electrostatic energy analyser over a wide range of energy up…”
Get full text

Velocity-space diffusion of wave-heated electrons in a mirror field by KIWAMOTO, Y, SAITO, T, KATANUMA, I, KURIHARA, K, MIYOSHI, S

“…A theoretical model is presented which accounts for an enhanced flux of loss-cone electrons observed when fundamental electron cyclotron resonance heating…”
Get full text