Research Output 1979 2019

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2017
5 Citations (Scopus)

Transport hysteresis of core plasma, isotope effect, and H-mode physics

Itoh, S., Itoh, K. & Shigeru, I., Feb 1 2017, In : Nuclear Fusion. 57, 2, 022003.

Research output: Contribution to journalArticle

plasma control
isotope effect
hysteresis
physics
gradients
7 Citations (Scopus)

Turbulent transport reduction induced by transition on radial electric field shear and curvature through amplitude and cross-phase in torus plasma

Kobayashi, T., Itoh, K., Ido, T., Kamiya, K., Itoh, S., Miura, Y., Nagashima, Y., fujisawa, A., Shigeru, I. & Ida, K., Dec 1 2017, In : Scientific reports. 7, 1, 14971.

Research output: Contribution to journalArticle

turbulence
curvature
shear
flux (rate)
electric fields
6 Citations (Scopus)

Zonal flow generation in parallel flow shear driven turbulence

Kosuga, Y., Itoh, S. & Itoh, K., Mar 1 2017, In : Physics of Plasmas. 24, 3, 032304.

Research output: Contribution to journalArticle

parallel flow
turbulence
shear
helical flow
flow distribution
2016
12 Citations (Scopus)

A branch of energetic-particle driven geodesic acoustic modes due to magnetic drift resonance

Sasaki, M., Kasuya, N., Itoh, K., Hallatschek, K., Lesur, M., Kosuga, Y. & Itoh, S., Oct 1 2016, In : Physics of Plasmas. 23, 10, 102501.

Research output: Contribution to journalArticle

energetic particles
acoustics
heating
ions
eigenvectors
10 Citations (Scopus)

Abrupt onset of tongue deformation and phase space response of ions in magnetically-confined plasmas

Ida, K., Kobayashi, T., Itoh, K., Yoshinuma, M., Tokuzawa, T., Akiyama, T., Moon, C., Tsuchiya, H., Inagaki, S. & Itoh, S. I., Oct 31 2016, In : Scientific reports. 6, 36217.

Research output: Contribution to journalArticle

tongue
ions
Boltzmann distribution
symmetry
routes
2 Citations (Scopus)

A calibration of setting of mach probes by observing GAM oscillations

Itoh, K., Zhao, K., Dong, J., Itoh, S., fujisawa, A., Shigeru, I., Sasaki, M., Nagashima, Y., Kosuga, Y., Cheng, J. & Kobayashi, T., Jan 1 2016, In : Plasma and Fusion Research. 11, 1402002.

Research output: Contribution to journalArticle

interference
Mach number
perturbation
oscillations
probes
37 Citations (Scopus)

A Concept of Cross-Ferroic Plasma Turbulence

Shigeru, I., Kobayashi, T., Kosuga, Y., Itoh, S., Mitsuzono, T., Nagashima, Y., Arakawa, H., Yamada, T., Miwa, Y., Kasuya, N., Sasaki, M., Lesur, M., fujisawa, A. & Itoh, K., Feb 26 2016, In : Scientific reports. 6, 22189.

Research output: Contribution to journalArticle

plasma turbulence
turbulence
scalars
nonequilibrium plasmas
gradients
1 Citation (Scopus)

Adaptive-Array electron cyclotron emission diagnostics using data streaming in a software defined radio system

Idei, H., Mishra, K., Yamamoto, M. K., Hamasaki, M., fujisawa, A., Nagashima, Y., Hayashi, Y., Onchi, T., Hanada, K. & Zushi, H., Apr 14 2016, In : Journal of Instrumentation. 11, 4, C04010.

Research output: Contribution to journalArticle

Streaming Data
Radio systems
Cyclotrons
cyclotrons
Diagnostics
1 Citation (Scopus)

Analysis of plasma equilibrium based on orbit-driven current density profile in steady-state plasma on QUEST

Nakamura, K., Alam, M. M., Jiang, Y. Z., Mitarai, O., Kurihara, K., Kawamata, Y., Sueoka, M., Takechi, M., Hasegawa, M., Tokunaga, K., Araki, K., Zushi, H., Hanada, K., fujisawa, A., Idei, H., Nagashima, Y., Kawasaki, S., Nakashima, H., Higashijima, A., Nagata, T. & 1 others, Fukuyama, A., Jan 1 2016, In : Fusion Engineering and Design. 109-111, p. 1528-1533 6 p.

Research output: Contribution to journalArticle

Orbits
Current density
Plasmas
Hamiltonians
MATLAB
5 Citations (Scopus)

Approaches to hysteresis of transport relations in toroidal plasmas

Itoh, S., Shigeru, I., Dong, J. & Itoh, K., Jan 1 2016, In : Plasma and Fusion Research. 11, 1, 2503086.

Research output: Contribution to journalArticle

toroidal plasmas
hysteresis
turbulence
modulation
heat
2 Citations (Scopus)

APTWG: The 5th Asia-Pacific Transport Working Group Meeting

Gao, X., Ghim, Y. C., Sun, Y. W., Gao, Z., Shigeru, I., Chen, W., Zhang, T. & Wang, Z. X., Feb 8 2016, In : Nuclear Fusion. 56, 3, 037001.

Research output: Contribution to journalArticle

turbulence
momentum
energetic particles
China
topology
7 Citations (Scopus)

A structural bifurcation of transport in toroidal plasmas

Itoh, K. & Itoh, S. I., Feb 19 2016, In : Plasma Physics and Controlled Fusion. 58, 4, 045017.

Research output: Contribution to journalArticle

toroidal plasmas
Electric fields
Plasmas
electric fields
curvature

Beam emission spectroscopy with radially and poloidally elongated optical sightlines

Ono, M., Ida, K., Kobayashi, T., Yoshinuma, M., Nakamura, Y., Kisaki, M., Nakano, H. & Moon, C., Nov 1 2016, In : Review of Scientific Instruments. 87, 11, 11E559.

Research output: Contribution to journalArticle

Emission spectroscopy
sensitivity
line of sight
spectroscopy
bundles
10 Citations (Scopus)

Bifurcation physics of magnetic islands and stochasticity explored by heat pulse propagation studies in toroidal plasmas

Ida, K., Kobayashi, T., Yoshinuma, M., Suzuki, Y., Narushima, Y., Evans, T. E., Ohdachi, S., Tsuchiya, H., Shigeru, I. & Itoh, K., Jul 29 2016, In : Nuclear Fusion. 56, 9, 092001.

Research output: Contribution to journalArticle

magnetic islands
toroidal plasmas
heat
physics
propagation
2 Citations (Scopus)

Changes of particle flux during end-plate biasing experiment in PANTA

Kin, F., Yamada, T., Shigeru, I., Nagashima, Y., Arakawa, H., Kobayashi, T., Miwa, Y., Kasuya, N., Sasaki, M., Kosuga, Y., fujisawa, A., Itoh, K. & Itoh, S., Sep 15 2016, In : journal of the physical society of japan. 85, 9, 093501.

Research output: Contribution to journalArticle

end plates
flux (rate)
turbulence
interactions
3 Citations (Scopus)

Comparative studies of inner and outer divertor discharges and a fueling study in QUEST

QUEST group, Jan 1 2016, In : Fusion Engineering and Design. 109-111, p. 1365-1370 6 p.

Research output: Contribution to journalArticle

Fueling
Plasmas
Inductance
Solenoids
Electrodes
2 Citations (Scopus)

Comparison of current density profiles based on particle orbit-driven current in steady-state plasma on QUEST

Alam, M. M., Nakamura, K., Xia, F., Mitarai, O., Hasegawa, M., Tokunaga, K., Araki, K., Zushi, H., Hanada, K., fujisawa, A., Idei, H., Nagashima, Y., Kawasaki, S., Nakashima, H., Higashijima, A. & Nagata, T., Jan 1 2016, In : Fusion Engineering and Design. 109-111, p. 1624-1630 7 p.

Research output: Contribution to journalArticle

Orbits
Current density
Plasmas
Cyclotrons
Electrons
1 Citation (Scopus)

Correlation of microstructural evolution in V-4Cr-4Ti by heavy ion and neutron irradiations

Muroga, T., Miyazawa, T., Nagasaka, T. & Watanabe, H., Jan 1 2016, In : Plasma and Fusion Research. 11, Specialissue1, 2405007.

Research output: Contribution to journalArticle

neutron irradiation
ion irradiation
heavy ions
electron irradiation
sinks
4 Citations (Scopus)

Current status and prospect of plasma control system for steady-state operation on QUEST

Hasegawa, M., Nakamura, K., Zushi, H., Hanada, K., fujisawa, A., Tokunaga, K., Idei, H., Nagashima, Y., Kawasaki, S., Nakashima, H. & Higashijima, A., Nov 15 2016, In : Fusion Engineering and Design. 112, p. 699-702 4 p.

Research output: Contribution to journalArticle

Plasmas
Control systems
Fueling
Low pass filters
Digital filters
1 Citation (Scopus)

Developments of frequency comb microwave reflectometer for the interchange mode observations in LHD plasma

Lhd Experiment Group, Feb 3 2016, In : Journal of Instrumentation. 11, 2, C02009.

Research output: Contribution to journalArticle

microwave reflectometers
Plasma devices
Reflectometers
Interchanges
Microwave
13 Citations (Scopus)

Eddy, drift wave and zonal flow dynamics in a linear magnetized plasma

Arakawa, H., Shigeru, I., Sasaki, M., Kosuga, Y., Kobayashi, T., Kasuya, N., Nagashima, Y., Yamada, T., Lesur, M., fujisawa, A., Itoh, K. & Itoh, S., Sep 15 2016, In : Scientific reports. 6, 33371.

Research output: Contribution to journalArticle

vortices
turbulence
perturbation
interactions
shear flow
2 Citations (Scopus)

Effective fluorination of single-layer graphene by high-energy ion irradiation through a LiF overlayer

Entani, S., Mizuguchi, M., Watanabe, H., Antipina, L. Y., Sorokin, P. B., Avramov, P. V., Naramoto, H. & Sakai, S., Jan 1 2016, In : RSC Advances. 6, 72, p. 68525-68529 5 p.

Research output: Contribution to journalArticle

Fluorination
Graphite
Ion bombardment
Graphene
Heterojunctions
6 Citations (Scopus)

Effect of impurity deposition layer formation on D retention in LHD plasma exposed W

Oya, Y., Fujita, H., Hu, C., Uemura, Y., Sakurada, S., Yuyama, K., Li, X., Hatano, Y., Yoshida, N., Watanabe, H., Nobuta, Y., Yamauchi, Y., Tokitani, M., Masuzaki, S. & Chikada, T., Dec 1 2016, In : Nuclear Materials and Energy. 9, p. 84-88 5 p.

Research output: Contribution to journalArticle

Plasma devices
Impurities
Plasmas
impurities
hydrogen isotopes
7 Citations (Scopus)

Effect of second-phase particles on the properties of W-based materials under high-heat loading

Tan, XY. Y., Li, P., Luo, LM. M., Xu, Q., Tokunaga, K., Zan, X. & Wu, YC. C., Dec 1 2016, In : Nuclear Materials and Energy. 9, p. 399-404 6 p.

Research output: Contribution to journalArticle

plastic deformation
Plastic deformation
heat
crack initiation
crack propagation

Effects of radial electric field on suppression of electron-temperature-gradient mode through multiscale nonlinear interactions

Moon, C., Kaneko, T., Itoh, K., Ida, K., Kobayashi, T., Shigeru, I., Itoh, S. & Hatakeyama, R., Aug 31 2016, In : Plasma Physics and Controlled Fusion. 58, 10, 105007.

Research output: Contribution to journalArticle

Electron temperature
Beam plasma interactions
Thermal gradients
temperature gradients
Turbulence
11 Citations (Scopus)

Experimental Identification of Electric Field Excitation Mechanisms in a Structural Transition of Tokamak Plasmas

Kobayashi, T., Itoh, K., Ido, T., Kamiya, K., Itoh, S. I., Miura, Y., Nagashima, Y., Fujisawa, A., Inagaki, S., Ida, K. & Hoshino, K., Aug 4 2016, In : Scientific reports. 6, 30720.

Research output: Contribution to journalArticle

electric fields
excitation
turbulence
physics
toroidal plasmas
15 Citations (Scopus)

Experimental validation of non-uniformity effect of the radial electric field on the edge transport barrier formation in JT-60U H-mode plasmas

Kamiya, K., Itoh, K. & Itoh, S., Aug 2 2016, In : Scientific reports. 6, 30585.

Research output: Contribution to journalArticle

nonuniformity
curvature
electric fields
shear
toroidal plasmas
6 Citations (Scopus)
Helium
Oxides
Electronic structure
Hydrogen
Defects
3 Citations (Scopus)

Flux of parallel flow momentum by parallel shear flow driven instability

Kosuga, Y., Itoh, S. I. & Itoh, K., Jan 1 2016, In : Plasma and Fusion Research. 11, 1203018.

Research output: Contribution to journalArticle

parallel flow
shear flow
diffusivity
shear
momentum
1 Citation (Scopus)

Guiding Center Orbit Calculation for Evaluating the Current Density Distributions of the Electrons in Electron Cyclotron Heating on QUEST

Alam, M. M., Nakamura, K., Idei, H., Hasegawa, M., Tokunaga, K., Araki, K., Hanada, K., Fujisawa, A., Nagashima, Y., Kawasaki, S., Nakashima, H., Higashijima, A., Xia, F. & Mitarai, O., Sep 2016, In : IEEE Transactions on Plasma Science. 44, 9, p. 1666-1671 6 p., 7482769.

Research output: Contribution to journalArticle

orbit calculation
electron cyclotron heating
density distribution
current density
electrons
10 Citations (Scopus)

Hardening and microstructural evolution of A533b steels irradiated with Fe ions and electrons

Watanabe, H., Arase, S., Yamamoto, T., Wells, P., Onishi, T. & Odette, G. R., Apr 1 2016, In : Journal of Nuclear Materials. 471, p. 243-250 8 p.

Research output: Contribution to journalArticle

Steel
Microstructural evolution
hardening
Hardening
steels
6 Citations (Scopus)

Helium transport in the core and stochastic edge layer in LHD

Ida, K., Yoshinuma, M., Goto, M., Schmitz, O., Dai, S., Bader, A., Kobayashi, M., Kawamura, G., Moon, C. & Nakamura, Y., Jun 15 2016, In : Plasma Physics and Controlled Fusion. 58, 7, 074010.

Research output: Contribution to journalArticle

Helium
helium
helium plasma
Plasmas
Hydrogen
3 Citations (Scopus)

Hydrogen flux measurements with permeation probes in spherical tokamak QUEST

Kuzmin, A., Zushi, H., Takagi, I., Sharma, S. K., Hirooka, Y., Kobayashi, M., Sakamoto, M., Hanada, K., Onchi, T., Oyama, Y., Youshida, N., Nakamura, K., fujisawa, A., Idei, H., Nagashima, Y., Hasegawa, M. & Mishra, K., Jul 1 2016, In : Vacuum. 129, p. 178-182 5 p.

Research output: Contribution to journalArticle

Permeation
Hydrogen
Fluxes
probes
hydrogen
2 Citations (Scopus)

Hydrogen isotope effect on the Dimits shift

Itoh, S. & Itoh, K., Aug 19 2016, In : Nuclear Fusion. 56, 10, 106028.

Research output: Contribution to journalArticle

hydrogen isotopes
isotope effect
shift
damping
turbulence
1 Citation (Scopus)

Improvement of the reynolds stress probe for end-plate biasing experiments in a cylindrical laboratory plasma

Kanzaki, T., Nagashima, Y., Shigeru, I., Kin, F., Miwa, Y., Sasaki, M., Yamada, T., fujisawa, A., Kobayashi, T., Kasuya, N., Kosuga, Y., Itoh, S. & Itoh, K., Jan 1 2016, In : Plasma and Fusion Research. 11, 1201091.

Research output: Contribution to journalArticle

end plates
Reynolds stress
probes
signal to noise ratios
13 Citations (Scopus)

Ion internal transport barrier in neutral beam heated plasmas on HL-2A

Yu, D. L., Wei, Y. L., Liu, L., Dong, J. Q., Ida, K., Itoh, K., Sun, A. P., Cao, J. Y., Shi, Z. B., Wang, Z. X., Xiao, Y., Yuan, B. S., Du, H. R., He, X. X., Chen, W. J., Ma, Q., Itoh, S., Zhao, K. J., Zhou, Y., Wang, J. & 12 others, Ji, X. Q., Zhong, W. L., Li, Y. G., Gao, J. M., Deng, W., Liu, Y., Xu, Y., Yan, L. W., Yang, Q. W., Ding, X. T., Duan, X. R. & Liu, Y., Mar 31 2016, In : Nuclear Fusion. 56, 5, 056003.

Research output: Contribution to journalArticle

neutral beams
ions
beam injection
shear flow
sustaining
2 Citations (Scopus)

Microstructural changes of Y-doped V-4Cr-4Ti alloys after ion and neutron irradiation

Watanabe, H., Yamasaki, K., Higashijima, A., Taguma, H., Nagasaka, T. & Muroga, T., Dec 1 2016, In : Nuclear Materials and Energy. 9, p. 447-450 4 p.

Research output: Contribution to journalArticle

Neutron irradiation
neutron irradiation
Ion bombardment
ion irradiation
Precipitates

Multiple wall-reflection effect in adaptive-array differential-phase reflectometry on QUEST

Idei, H., Mishra, K., Yamamoto, M. K., fujisawa, A., Nagashima, Y., Hamasaki, M., Hayashi, Y., Onchi, T., Hanada, K. & Zushi, H., Jan 13 2016, In : Journal of Instrumentation. 11, 1, C01014.

Research output: Contribution to journalArticle

Reflectometry
Fast Fourier transform
Fast Fourier transforms
Derivatives
computer programs
1 Citation (Scopus)

MyView2, a new visualization software tool for analysis of LHD data

Moon, C., Yoshinuma, M., Emoto, M. & Ida, K., Mar 1 2016, In : Fusion Engineering and Design. 104, p. 56-60 5 p.

Research output: Contribution to journalArticle

Visualization
Fusion reactions
Physics
Plasmas
Plasma confinement
5 Citations (Scopus)

Nonlinear excitation of subcritical fast ion-driven modes

Lesur, M., Itoh, K., Ido, T., Itoh, S., Kosuga, Y., Sasaki, M., Shigeru, I., Osakabe, M., Ogawa, K., Shimizu, A. & Ida, K., Apr 13 2016, In : Nuclear Fusion. 56, 5, 056009.

Research output: Contribution to journalArticle

excitation
seeds
ions
nonlinearity
kinetics
19 Citations (Scopus)

Nonlinear Excitation of Subcritical Instabilities in a Toroidal Plasma

Lesur, M., Itoh, K., Ido, T., Osakabe, M., Ogawa, K., Shimizu, A., Sasaki, M., Ida, K., Shigeru, I. & Itoh, S., Jan 8 2016, In : Physical Review Letters. 116, 1, e015003.

Research output: Contribution to journalArticle

toroidal plasmas
excitation
seeds
nonlinearity
collisionless plasmas

Observation of an edge coherent mode and poloidal flow in the electron cyclotron wave induced high βp plasma in QUEST

Banerjee, S., Zushi, H., Nishino, N., Mishra, K., Mahira, Y., Tashima, S., Ejiri, A., Yamaguchi, T., Onchi, T., Nagashima, Y., Hanada, K., Nakamura, K., Idei, H., Hasegawa, M., fujisawa, A., Kuzmin, A. & Matsuoka, K., Aug 1 2016, In : Physics of Plasmas. 23, 8, 082507.

Research output: Contribution to journalArticle

cyclotrons
electrons
magnetohydrodynamic flow
configurations
turbulence
4 Citations (Scopus)

Observation of the inward propagation of spontaneous toroidal flow from the plasma boundary in LHD

Kamiya, K., Ida, K., Itoh, K., Itoh, S., Yoshinuma, M., Yokoyama, M., Kubo, S., Tsuchiya, H., Tamura, N., Masuzaki, S., Suzuki, C. & Akiyama, T., Oct 1 2016, In : Physics of Plasmas. 23, 10, 102309.

Research output: Contribution to journalArticle

electron cyclotron heating
propagation
dynamic response
unity
temperature gradients
5 Citations (Scopus)

On magnetic signals of a large-scale quasi-electrostatic perturbation

Itoh, K., Itoh, S., Ida, K. & Kosuga, Y., Sep 15 2016, In : journal of the physical society of japan. 85, 9, 094504.

Research output: Contribution to journalArticle

magnetic signals
toroidal plasmas
electrostatics
perturbation
5 Citations (Scopus)

Onset condition of the subcritical geodesic acoustic mode instability in the presence of energetic-particle-driven geodesic acoustic mode

Itoh, K., Itoh, S., Kosuga, Y., Lesur, M. & Ido, T., May 1 2016, In : Plasma Physics Reports. 42, 5, p. 418-423 6 p.

Research output: Contribution to journalArticle

energetic particles
acoustics
period doubling
actuators
thresholds
2 Citations (Scopus)

On the Origin of Steep and Localized Radial Electric Field in the Transport Barrier at Plasma Edge

Itoh, K., Itoh, S., Kobayashi, T., Kamiya, K., Ido, T., Tokuzawa, T., Shigeru, I. & Kasuya, N., Aug 1 2016, In : Contributions to Plasma Physics. 56, 6-8, p. 522-527 6 p.

Research output: Contribution to journalArticle

electric fields
toroidal plasmas
turbulence
curvature
retarding
6 Citations (Scopus)
harmonics
heat
heating
propagation
pulses
2 Citations (Scopus)

Origin and Evolution of Spontaneous Rotation in Plasma under Different Magnetic Field Geometries in Tokamak QUEST

QUEST Team, Apr 1 2016, In : IEEE Transactions on Plasma Science. 44, 4, p. 441-447 7 p., 7416222.

Research output: Contribution to journalArticle

magnetic field configurations
geometry
magnetic fields
electron cyclotron resonance
plasma currents
9 Citations (Scopus)

Power Balance Estimation in Long Duration Discharges on QUEST

Hanada, K., Zushi, H., Idei, H., Nakamura, K., Ishiguro, M., Tashima, S., Kalinnikova, E. I., Nagashima, Y., Hasegawa, M., fujisawa, A., Higashijima, A., Kawasaki, S., Nakashima, H., Mitarai, O., Fukuyama, A., Takase, Y., Gao, X., Liu, H., Qian, J., Ono, M. & 1 others, Raman, R., Nov 1 2016, In : Plasma Science and Technology. 18, 11, p. 1069-1075 7 p.

Research output: Contribution to journalArticle

water temperature
configurations
vessels
orbits
cooling
6 Citations (Scopus)

Properties of Lu2O3 doped tungsten and thermal shock performance

Wang, S., Zhang, J., Luo, L. M., Zan, X., Xu, Q., Zhu, X. Y., Tokunaga, K. & Wu, Y. C., Nov 1 2016, In : Powder Technology. 301, p. 65-69 5 p.

Research output: Contribution to journalArticle

Tungsten
Thermal shock
Microhardness
Tungsten alloys
Deuterium