Faculty Profiles - OHNO, Noriyasu

Papers - OHNO, Noriyasu

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Superdiffusion and multifractal statistics of edge plasma turbulence in fusion devices Reviewed International coauthorship International journal

Budaev V.P., Takamura S., Ohno N., Masuzaki S.

Nuclear Fusion Vol. 46 ( 4 ) 2006.4

Language：English Publishing type：Research paper (scientific journal) Publisher：Nuclear Fusion

The edge plasma turbulence in the T-10 tokamak, the HYBTOK-II tokamak, the linear machine NAGDIS-II and the Large Helical Device have been studied. The fluctuations in the plasma density have been analysed in terms of the multifractal formalism revisited with wavelets. In most of the cases considered, the edge density fluctuations demonstrate multifractal statistics, i.e. the scaling behaviour of the absolute moments is described by a convex function with non-trivial self-similarity properties. The multifractality factor defined in the multiplicative cascade model is a relevant parameter for characterizing the edge plasma turbulence. The multiplicative cascade process has a 'coarse' time scale T ∼ 50-200 ms iterating towards finer scales. This time scale is referred to as an integral correlation scale. The self-similarity parameters have been observed to depend on the edge plasma condition. The correlation and transport properties have been analysed regarding the multifractality parameter. The diffusion transport coefficient in an edge plasma is not a trivial function of multifractality parameters. © 2006 IAEA, Vienna.

DOI： 10.1088/0029-5515/46/4/S10

Scopus

Comparison of HeI Line Intensity Ratio Method and Electrostatic Probe for Electron Density and Temperature Measurements in NAGDIS-II Reviewed Open Access

S.Kajita, N.Ohno, S.Takamura, T.Nakano

Physics of Plasmas Vol. 13 page： 013301(9pages) 2006.1

Charactersitics of rf inductive plasma in oxy-combustion

Yugo Osaka, Noriyuki Kobayashi, M.A.Razzak, Noriyasu Ohno, Shuichi Takamura

The 4th International Conference on Combustion, Incineration/Pyrolysis and Emission Control, September 26-29, 2006, Kyoto, Japan Vol. 1 2006

Fundamental research on plasma-assisted combustion by applying rf power

Yugo Osaka, Noriyuki Kobayashi, M.A.Razzak, Noriyasu Ohno, Shuichi Takamura

11th Asian Pacific Confederation of Chemical Engineering Congress, August 27-30, 2006 Kuala Lumpur, Malaysia Vol. 1 2006

Dust Formation and Transport in the Divertor Plasma Simulators

N.Ohno, M.Miyoshi, T.Yamada, M.Pustylnik, S.Kajita, S.Takamura

7th Workshop ont Fine Particle Plasma, NIFS, oki, Japan December, 15-16, 2006(招待講演) Vol. 1 2006

Two-dimensional measurement of plasma dynamics with an ICCD fast camera based on HeI line intensity ratio method

N.Yamamoto, K.Miyamoto, K.Kitagawa, S.Kajita, M.Okamoto, N.Ohno

16th International Toki Conference on Advanced Imaging and Plasma Diagnostics, Toki, Gifu, Japan, Dec. 5-8, 2006 page： 6-15 2006

Imaging of tungsten impurity ejected from damaged material due to transient heat load

S.Kajita, N.Ohno, S.Takamura

16th International Toki Conference on Advanced Imaging and Plasma Diagnostics, Toki, Gifu, Japan, Dec. 5-8, 2006 page： 4-01 2006

ELM Propagation and Fluctuations Characteristics in H- and L-mode SOL Plasmas on JT-60U

N.Asakura, N.Ohno, H.Kawashima, H.Miyoshi, G.Matsunaga, N.Oyama, S.Takamura, Y.Uesugi, M.Takechi, T.Nakano, H.Kubo

21st IAEA Fusion Energy Conference, Chengdu, China, Oct. 16-21, 2006 page： EX/9-2 2006

Integrated View of Disruption Dynamics on Internal Electromagnetic and Plasma Structures in the small tokamak HYBTOK-II

M.Okamoto, S.Takamura,N.Ohno, S.Kajita, Y.Kikuchi, Y.Uesugi, T.Ozeki, Y.Kawano, M.Sugihara

21st IAEA Fusion Energy Conference, Chengdu, China, Oct.16-21,2006 page： EX/P8-14 2006

Super Dense Core Plasma due to Internal Diffusion Barrier in LHD

N.Ohyabu, .Morisaki, S.Masuzaki, R.Sakamoto, M.Kobayashi, J.Miyazawa, M.SHoji, T.Akiyama, N.Ashikawa, M.Emoto, H.Funaba, P.Goncharov, M.Goto, J.H.Harris, Y.Hirooka, K.Ichiguchi, T.Ido, K.Itoh, H.Igami, K.Ikeda, S.Inagaki, H.KAsahara, T.Kobuchi, S.Kubo, R.Kumazawa, S.Morita, S.Muto, K.Nagaoka, N.Nakajima, Y.Nakamura, H.Nakanishi, K.Nariharam Y.Narushima, M.Nishiura, T.Notake, S.Ohdachi, N.Ohno, Y.Oka, M.Osakabe, T.Ozaki, B.J.Peterson, K.Saito, S.Sakakibara, R.Sanchez, H.Sanuki, K.Sato, T.Seki, A.SHimizu, H.SUgama, C.Suzuki, Y.Suzuki, Y.Takeiri, K.Tanaka, N.Tamura, K.TOi, T.Tokuzawa, S.TOda, K.Tsumori, I.Yamada, O.Yamagishi, M.Yokoyama, S.Yoshimura, Y.Yoshimura, M.Yoshinuma, K.Ida, T.Shimozuma, K.Y.Watanabe, Y.Nagayama, O.Kaneko, T.Mutoh, K.Kawahata, H.Yamada, A.Komori, S.Sudo, O.Motojima

21st IAEA Fusion Energy Conference, Chengdu, China, Oct.16-21, 2006 page： EX/8-1 2006

Bursty Fluctuation Characterisitics in SOL/Divertor Plasmas of Large Helical Device

N.Ohno, S.Masuzzaki, V.P.Budaev, H.Miyoshi, S.Takamura, T.Morisaki, N.Ohyabu, A.Komori

21st IAEA Fusion Energy Conference, Chengdu, China, Oct 16-21, 2006 page： EX/P4-20 2006

Extended Steady-State and High=beta Regimes of Net-Current Free Heliotron Plasmas in the Large Helical Device

O.Motojima, H.Yamada, A.Komori, O.Kaneko, K.Kawahata, T.Mito, T.Mutoh, N.Ohyabu K.Ida, S.Imagawa, Y.Nagayama, T.Shimozuma, K.Y.Watanabe, S.Masuzakim J.Miyazawa, S.Morita, S.Ohdachi, N.Ohno, K.Saito, S.Sakakibara, Y.Takeiri, N.Tamura, K.Toi, M.Tokitani, M.Yokoyama, M.Yoshinuma, K.Ikeda, A.Isayama, K.Ishii, S.Kubo, S.Murakami, K.Nagasaki, T.Seki, K.Takahata, H.Takenaga, LHD Experimental Group

21st IAEA Fusion Energy Conference, Chengdu, China, Oct.16-21. 2006 page： OV/2-1 2006

Plasma-surface interaction, scrape-off layer and divertor physics: Implications for ITER

B.Lipschultz, X.Bonnin, A.Kukushkin, A.Leonard, J.Roth, E.Tsitrone, D.Whyte, N.Asakura, D.Coster, G.Counsell, R.Doerner, R.Dux, G.Federici, M.Fenstermacher, W.Fundamenski, P.Ghendrih, A.Hermann, J.Hu, A.Kallenbach, S.Kasheninnikov, K.Krieger, G.Krienev, A.Kreter, B.Kurnaev, B.LaBombard, S.Lisgom A.Loarte, T.Nakano, R.Neu, N.Ohno, H.Pacher, J.Paley, Y.Pan, G.Pautasso, V.Philipps, R.Pitts, V.Riccardo, V.Rohde, D.Rudakov, P.Stangeb, S.Takamura, T.Tanabe, Y.Yang, S.Zhu

21st IAEA Fusion Energy Confernece, Chnegdu, China, Oct.16-21, 2006 page： IT/1-4 2006

Effects of transient heat load on tungsten surface having sub-micron helium holes and bubbles

S.Kajita, N.Ohno, S.Takamura

33rd EPS Conference on Plasma Phys. Rome, 19-23 June 2006 ECA Vol. 30I page： 4.137 2006

Plasma Response on Penetraton of External Rotating Helical Magnetic Field in HYBTOK-II Tokamak Edge Plasma

V.P.Budaev, I.M.Pankratov, S.Takamura, N.Ohno, S.Kajita, M.Takagi, H.Matsuno, M.Okamoto, S.Hosoi, Y.Hasebe, T.Yamada, A.Ya.Omelchenko, V.V.Olshansky

33rd EPS Conference on Plasma Phys. Rome, 19-23 June 2006 ECA Vol. 30I page： 4.109 2006

Intermittency in laboratory and space plasma: comparative study of multifractal statistics

V.P.Budaev, S.P.Savin, L.M.Zelenyi, S.Takamura, N.Ohno, N.Shevyrev

33rd EPS Conference of Plasma Phys. Rome, 19-23 June 2006 ECA Vol. 30I page： 1.064 2006

Investigation and Application of the Line Intensity Ratio Method for the Measurement of Electron Density and Temperature

S.Kajita, T.Hiraishi, N.Ohno, M.Okamoto, T.Nakano, S.Takamura

13th International Congress on Plasma Physics, Kiev, May 22-26, 2006 page： A151p 2006

Dynamic Interaction between Disruptive Plasma and Wakk in the Small Tokamak HYBTOK-II

M.Okamoto, T.Yamada, T.Hiraishi, Y.Kikuchi, N.Ohno, S.Takamura

17th PSI Conference, Heifei, China, May 22-26, 2006 page： 2-15 2006

High Density Plasma Generation by RF Ohmic Discharge in Toroidal Divertor Simulator NAGDIS-T

M.Nagase, H.Matsuda, N.Ohno, S.Takamura, M.Takagi

17th PSI Conference, Heifei, China, May 22-26, 2006 page： 3-16 2006

Carbon Dust Formation and Chemical Erosion Process in High Density Deuterium Plasmas in the Linear Divertor Simulator

Y.Miyachi, M.Yoshimi, N.Ohno, S.Takamura

17th PSI Conference, Heifei, China, May 22-26, 2006 page： 2-50 2006

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Papers - OHNO, Noriyasu