Search Results - "Katanuma, I"

Recent results of divertor simulation research using an end-cell of a large tandem mirror device by Nakashima, Y., Takeda, H., Ichimura, K., Hosoi, K., Sakamoto, M., Hirata, M., Ichimura, M., Ikezoe, R., Imai, T., Ishii, T., Kariya, T., Katanuma, I., Kohagura, J., Minami, R., Numakura, T., Ueda, H., Yoshikawa, M., Asakura, N., Furuta, T., Hatayama, A., Hirooka, Y., Kado, S., Masuzaki, S., Matsuura, H., Nagata, S., Nishino, N., Ohno, N., Sagara, A., Shikama, T., Shoji, M., Toma, M., Tonegawa, A., Ueda, Y.

“…This paper describes the results of characterization of high heat and particle fluxes produced at the end-cell of the large tandem mirror GAMMA 10 and of the…”
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Progress of divertor simulation research toward the realization of detached plasma using a large tandem mirror device by Nakashima, Y., Takeda, H., Ichimura, K., Hosoi, K., Oki, K., Sakamoto, M., Hirata, M., Ichimura, M., Ikezoe, R., Imai, T., Iwamoto, M., Hosoda, Y., Katanuma, I., Kariya, T., Kigure, S., Kohagura, J., Minami, R., Numakura, T., Takahashi, S., Yoshikawa, M., Asakura, N., Fukumoto, M., Hatayama, A., Hirooka, Y., Kado, S., Kubo, H., Masuzaki, S., Matsuura, H., Nagata, S., Nishino, N., Ohno, N., Sagara, A., Shikama, T., Shoji, M., Tonegawa, A., Ueda, Y.

“…This paper describes the results of the experiments performed on Tandem Mirror device GAMMA 10/PDX mainly using a new “divertor simulation experimental module…”
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Divertor simulation experiment and its future research plan making use of a large tandem mirror device by Nakashima, Y., Takeda, H., Hosoi, K., Yonenaga, R., Katanuma, I., Ichimura, K., Ichimura, M., Imai, T., Ishii, T., Kariya, T., Kiwamoto, Y., Minami, R., Miyata, Y., Ozawa, H., Shidara, H., Yamaguchi, Y., Yoshikawa, M., Asakura, N., Hatayama, A., Higashizono, Y., Kado, S., Masuzaki, S., Nishino, N., Ohno, N., Ueda, Y.

“…Divertor simulation study has been started as a new research plan, by making best use of a large linear plasma device. The experiment of generating the plasma…”
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Research plan for divertor simulation making use of a large tandem mirror device by Nakashima, Y., Ichimura, M., Katanuma, I., Yoshikawa, M., Kariya, T., Minami, R., Kiwamoto, Y., Miyata, Y., Shidara, H., Yamaguchi, Y., Yonenaga, R., Takeda, H., Imai, T.

“…We are planning to start a study of divertor simulation under the closely resemble to actual fusion plasma environment making use of the advantage of open…”
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Observation of the effects of radially sheared electric fields on the suppression of turbulent vortex structures and the associated transverse loss in GAMMA 10 by Cho, T, Yoshida, M, Kohagura, J, Hirata, M, Numakura, T, Higaki, H, Hojo, H, Ichimura, M, Ishii, K, Islam, K Md, Itakura, A, Katanuma, I, Nakashima, Y, Saito, T, Tatematsu, Y, Yoshikawa, M, Kojima, Y, Tokioka, S, Yokoyama, N, Tomii, Y, Imai, T, Pastukhov, V P, Miyoshi, S

“…Vortexlike turbulent structures in hot-ion mode plasmas with several keV are observed in the case with a radially produced weak shear of electric fields E(r)…”
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Generalized scaling laws of the formation and effects of plasma-confining potentials for tandem-mirror operations in GAMMA 10 by Cho, T, Kohagura, J, Numakura, T, Hirata, M, Hojo, H, Ichimura, M, Ishii, K, Itakura, A, Katanuma, I, Nakashima, Y, Saito, T, Tatematsu, Y, Yoshikawa, M, Minami, R, Nagashima, S, Yoshida, M, Tamano, T, Yatsu, K, Miyoshi, S

“…The main operations from 1979 to 2000 in the GAMMA 10 tandem-mirror, characterized in terms of the high-potential mode having kV-order plasma-confining…”
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The study of the orbits and diffusion of ions trapped in the magnetic field in GAMMA10 by mapping equation by Saimaru, H., Katanuma, I., Sasagawa, Y., Cho, T.

“…The present GAMMA10 experiment suggests that the ions trapped in the thermal barrier cell escape from there radially, although the mechanism of the radial loss…”
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The analytical formulation of a neoclassical resonant transport in a mirror by Katanuma, I., Ito, T., Saimaru, H., Sasagawa, Y., Mizoguchi, Y., Tatematsu, Y., Saito, T., Ishii, K., Imai, T., Cho, T.

“…The analytical formulation of the neoclassical resonant diffusion is derived in order to investigate the ion radial transport in the non-axisymmetric mirror…”
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Thermal barrier formation and plasma confinement in the axisymmetrized tandem mirror GAMMA 10 by INUTAKE, M, CHO, T, NAKASHIMA, Y, SAITO, T, SAKASAI, A, SAWADA, K, WAKAIDA, I, YAMAGUCHI, N, YATSU, K, ICHIMURA, M, ISHII, K, ITAKURA, A, KATANUMA, I, KIWAMOTO, Y, KUSAMA, Y, MASE, A, MIYOSHI, S

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Observation of a plateau electron distribution function due to electron cyclotron heating for an efficient plug potential formation by CHO, T, HIRATA, M, SAITO, T, KIWAMOTO, Y, YATSU, K, MIYOSHI, S, OGURA, K, TAKAHASHI, E, KONDOH, T, YAMAGUCHI, N, MASAI, K, HAYASHI, K, KATANUMA, I, ISHII, K

“…A plateau-shaped electron distribution function is observed when an electrostatic electron-trapping potential is formed by the electron cyclotron heating (ECH)…”
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Observation of Gentle Hump Structure on Energy Distribution Functions of End-Loss Ions in the rf-Driven Tandem Mirror Plasma by Ishii, K., Goto, T., Goi, Y., Kikuno, N., Katsuki, Y., Nagasaki, M., Ono, Y., Ishibashi, N., Yamanashi, M., Nakamura, M., Katanuma, I., Mase, A., Ichimura, M., Itakura, A., Tamano, T., Yatsu, K.

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Production of high-density plasmas with high harmonic fast waves in the GAMMA 10 tandem mirror by Ichimura, M., Cho, T., Higaki, H., Hirata, M., Hojo, H., Horinouchi, K., Ishii, K., Islam, M.K., Itakura, A., Kakimoto, S., Katanuma, I., Kohagura, J., Nakashima, Y., Saito, T., Tatematsu, Y., Yamaguchi, Y., Yatsu, K., Yoshikawa, M.

“…By using high harmonic fast waves (HHFW), the density clamping due to the formation of axial eigenmodes becomes weak in the GAMMA 10 tandem mirror. The…”
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Cyclotron emission spectra from collisionless electrons resonantly heated by cyclotron waves in a magnetic mirror by Tatematsu, Y., Saito, T., Kiwamoto, Y., Ito, K., Abe, H., Ishikawa, M., Koyama, H., Katanuma, I., Yatsu, K.

“…The frequency spectrum of cyclotron emission resonantly heated electrons in a magnetic mirror is investigated. In an experiment, a very strong emission is…”
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Enhanced velocity diffusion along electron-cyclotron-resonance heating characteristics observed in hot-electron energy spectra in the plasma loss cone by SAITO, T, KATANUMA, I, KIWAMOTO, Y, KARIYA, T, MIYOSHI, S

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Control of plasma transport by active tailoring of potential profile along open magnetic fields by Tatematsu, Y., Kiwamoto, Y., Saito, T., Yoshimura, Y., Takahashi, T., Katanuma, I., Inutake, M., Tamano, T.

“…This paper studies modifications of convective heat transport in terms of electric and magnetic forces acting on electrons streaming along open field lines…”
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Observation and Control of Transverse Energy-Transport Barrier due to the Formation of an Energetic-Electron Layer with Sheared E × B Flow by Cho, T., Kohagura, J., Numakura, T., Hirata, M., Higaki, H., Hojo, H., Ichimura, M., Ishii, K., Islam, K. Md, Itakura, A., Katanuma, I., Minami, R., Nakashima, Y., Saito, T., Tatematsu, Y., Watanabe, O., Yoshikawa, M., Kojima, A., Miyake, Y., Miyata, Y., Shimizu, K., Tomii, Y., Yoshida, M., Sakamoto, K., Imai, T., Pastukhov, V. P., Miyoshi, S.

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Erratum: Observation and Control of Transverse Energy-Transport Barrier due to the Formation of an Energetic-Electron Layer with Sheared E × B Flow [Phys. Rev. Lett. 97 , 055001 (2006)] by Cho, T., Kohagura, J., Numakura, T., Hirata, M., Higaki, H., Hojo, H., Ichimura, M., Ishii, K., Islam, K. Md, Itakura, A., Katanuma, I., Minami, R., Nakashima, Y., Saito, T., Tatematsu, Y., Watanabe, O., Yoshikawa, M., Kojima, Y., Miyake, Y., Miyata, Y., Shimizu, K., Tomii, Y., Yoshida, M., Sakamoto, K., Imai, T., Pastukhov, V. P., Miyoshi, S.

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Observation and control of transverse energy-transport barrier due to the formation of an energetic-electron layer with sheared ExB flow by Cho, T, Kohagura, J, Numakura, T, Hirata, M, Higaki, H, Hojo, H, Ichimura, M, Ishii, K, Islam, K Md, Itakura, A, Katanuma, I, Minami, R, Nakashima, Y, Saito, T, Tatematsu, Y, Watanabe, O, Yoshikawa, M, Kojima, A, Miyake, Y, Miyata, Y, Shimizu, K, Tomii, Y, Yoshida, M, Sakamoto, K, Imai, T, Pastukhov, V P, Miyoshi, S

“…Off-axis electron-cyclotron heating in an axisymmetric barrier mirror produces a cylindrical layer with energetic electrons, which flow through the central…”
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The study of the orbits and diffusion of ions trapped in the magnetic field in GAMMA 10 by mapping equation by SAIMARU, H, KATANUMA, I, SASAGAWA, Y, CHO, T

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Observation of the effects of radially sheared electric fields on the suppression of turbulent vortex structures and the associated transverse loss in GAMMA 10 by CHO, T, YOSHIDA, M, ITAKURA, A, KATANUMA, I, NAKASHIMA, Y, SAITO, T, TATEMATSU, Y, YOSHIKAWA, M, KOJIMA, Y, TOKIOKA, S, YOKOYAMA, N, TOMII, Y, KOHAGURA, J, IMAI, T, PASTUKHOV, V. P, MIYOSHI, S, HIRATA, M, NUMAKURA, T, HIGAKI, H, HOJO, H, ICHIMURA, M, ISHII, K, ISLAM, K. Md

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