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

Formation of Nanostructured Tungsten with Arborescent Shape due to Helium Plasma Irradiation Reviewed

S.Takamura, N.Ohno, D.Nishijima, S.Kajita

Plasma Fusion Res. Vol. 1 page： 051(2pages) 2006

Reduction of Laser Threshold for Melting Tungsten due to Subsurface Helium Holes Reviewed

S.Kajita, D.Nishijima, N.Ohno, S.Takamura

J. Appl. Phys. Vol. 100 page： 103304(10 pages) 2006

Modification of the Damping Rate of the Oscillation of a Dust Particle levitating in a Plasma Due to the Delayed Charging Effect Reviewed

M.Y.Pustylnik, N.Ohno, S.Takamura, R.Smirnov

Phys. Rev. E Vol. 74 page： 046402(9pages) 2006

Analysis on Relation between Magnetic Structure and Bursty Fluctuation in SOL/Divertor Plasma of LHD Reviewed

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

Contrib. Plasma Physics Vol. 46 page： 692-697 2006

Numerical Analysis on Generation of High Density Plasmas in the Toroidal Device NAGDIS-T for SOL and Divertor Simulation Studies Reviewed

M.Nagase, S.Takamura, N.Ohno, H.Masuda, H.Kitahara, M.Takagi

Contrib. Plasma Physics Vol. 46 page： 557-562 2006

Fundamental study on the control of oxy-combustion by rf non-equilibrium plasma Reviewed

Y.Osaka, N.Kobayashi, M.A.Razzak, N.Ohno, S.Takamura

Fluid and heat engineering research Vol. 41 page： 5-12 2006

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

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