Faculty Profiles - WATANABE Tomohiko

Papers - WATANABE Tomohiko

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Comprehensive gyrokinetic study of eigenstate transitions in fast ion-driven electrostatic drift instabilities Reviewed

B.J. Kang a, H. Sugama, T.-H. Watanabe, M. Nunami

Physics Letters A Vol. 535 page： 130278-1 - 130278-20 2025.1

Convective Growth of Auroral Arcs Through the Feedback Instability in a Dipole Geometry Reviewed

T. Sakaki, T.‐H. Watanabe, and S. Maeyama

Journal of Geophysical Research: Space Physics Vol. 129 ( 12 ) page： e2023JA032407-1 - e2023JA032407-12 2024.11

Rotating flux-tube model for local gyrokinetic simulations with background flow and magnetic shears Reviewed

Shinya Maeyama, Tomo-Hiko Watanabe, Motoki Nakata, Masanori Nunami, Yuuichi Asahi, Akihiro Ishizawa

Journal of Computational Physics Vol. 522 page： 113595-1 - 113595-19 2024.11

Overview of multiscale turbulence studies covering ion-to-electron scales in magnetically confined fusion plasma Reviewed International coauthorship

Maeyama, S; Howard, NT; Citrin, J; Watanabe, TH; Tokuzawa, T

NUCLEAR FUSION Vol. 64 ( 11 ) 2024.11

Time evolutions of information entropies in a one- dimensional Vlasov–Poisson system Reviewed

K. Maekaku, H. Sugama, and T.-H. Watanabe

Physics of Plasmas Vol. 31 page： 102101-1 - 102101-25 2024.10

Energy exchange between electrons and ions in ion temperature gradient turbulence Reviewed

PHYSICS OF PLASMAS Vol. 31 ( 6 ) 2024.6

Reversal of the Parallel Drift Frequency in Anomalous Transport of Impurity Ions Reviewed International coauthorship

Shaokang Xu, S Maeyama, T-H Watanabe, ÖD Gürcan

Physical Review Letters Vol. 132 ( 10 ) page： 105101 2024.3

Multi-scale gyrokinetic simulations of JT-60U L-mode plasma: reduction of the ion scale energy loss due to the nonlinear coupling with the electron scale turbulence Reviewed International coauthorship

Xu, SK; Maeyama, S; Watanabe, TH

NUCLEAR FUSION Vol. 64 ( 3 ) 2024.3

Plasma beta dependence of ion temperature gradient driven turbulence influenced by Shafranov shift Reviewed

Niiro, M; Ishizawa, A; Nakamura, Y; Maeyama, S; Watanabe, TH

PLASMA PHYSICS AND CONTROLLED FUSION Vol. 65 ( 6 ) 2023.6

Multimodal convolutional neural networks for predicting evolution of gyrokinetic simulations Reviewed

Honda, M; Narita, E; Maeyama, S; Watanabe, TH

CONTRIBUTIONS TO PLASMA PHYSICS Vol. 63 ( 5-6 ) 2023.6

更聞けない!? 磁場閉じ込めプラズマの微視的不安定性　1. はじめに Invited

渡邉智彦

プラズマ・核融合学会誌 Vol. 99 ( 6 ) page： 285 2023.6

更聞けない!? 磁場閉じ込めプラズマの微視的不安定性　2. 微視的不安定性を記述する基礎方程式 Invited

渡邉智彦, 前山伸也

プラズマ・核融合学会誌 Vol. 99 ( 6 ) page： 286 - 290 2023.6

Stabilization of trapped electron mode through effective diffusion in electron temperature gradient turbulence Reviewed

Watanabe, TH; Maeyama, S; Nakata, M

NUCLEAR FUSION Vol. 63 ( 5 ) 2023.5

Stabilization mechanism of the feedback instability with height-resolved ionosphere and Alfven resonator models Reviewed

Watanabe, TH; Hiwatari, J; Maeyama, S

PHYSICS OF PLASMAS Vol. 30 ( 4 ) 2023.4

Stabilization of trapped electron mode through effective diffusion in electron temperature gradient turbulence Reviewed

T.-H. Watanabe, S. Maeyama, and M. Nakata

Nuclear Fusion 2023.3

Existence of finite and anisotropic heavy ion parallel compressibility pinch in the gyrokinetic turbulence Reviewed

Xu, SK; Maeyama, S; Watanabe, TH

PHYSICAL REVIEW RESEARCH Vol. 4 ( 4 ) 2022.12

Simulation of Multi-scale Turbulent Transport in Burning Plasma Invited

T.-H. Watanabe, S. Maeyama, and S. Xu

Vol. 41 ( 4 ) page： 199 - 204 2022.12

Toward efficient runs of nonlinear gyrokinetic simulations assisted by a convolutional neural network model recognizing wavenumber-space images Reviewed

Narita, E; Honda, M; Maeyama, S; Watanabe, TH

NUCLEAR FUSION Vol. 62 ( 8 ) 2022.8

Integrated modelling and multiscale gyrokinetic validation study of ETG turbulence in a JET hybrid H-mode scenario Reviewed

Citrin, J; Maeyama, S; Angioni, C; Bonanomi, N; Bourdelle, C; Casson, FJ; Fable, E; Görler, T; Mantica, P; Mariani, A; Sertoli, M; Staebler, G; Watanabe, T

NUCLEAR FUSION Vol. 62 ( 8 ) 2022.8

Multi-scale turbulence simulation suggesting improvement of electron heated plasma confinement Reviewed

Maeyama, S; Watanabe, TH; Nakata, M; Nunami, M; Asahi, Y; Ishizawa, A

NATURE COMMUNICATIONS Vol. 13 ( 1 ) 2022.6

Anomalous tungsten transport driven by ion temperature gradient turbulence Reviewed

Shaokang Xu, S.Maeyama and T.-H. Watanabe

Nuclear Fusion 2022.4

第一原理シミュレーションで挑む核燃焼プラズマ閉じ込めの物理 Invited

渡邉智彦, 井戸村泰宏, 藤堂泰, 本多充

日本原子力学会誌 Vol. 64 ( 3 ) page： 26 - 30 2022.3

Contour dynamics for one-dimensional Vlasov-Poisson plasma with the periodic boundary Reviewed

Sato, H; Watanabe, TH; Maeyama, S

JOURNAL OF COMPUTATIONAL PHYSICS Vol. 445 2021.11

Small-Scale Dynamic Aurora (vol 217, 17, 2021)

Kataoka, R; Chaston, CC; Knudsen, D; Lynch, KA; Lysak, RL; Song, Y; Rankin, R; Murase, K; Sakanoi, T; Semeter, J; Watanabe, TH; Whiter, D

SPACE SCIENCE REVIEWS Vol. 217 ( 4 ) 2021.6

Moment extract method for drift kinetic simulation of magnetized plasma Reviewed

Kenji Nishioka, Tomo-Hiko Watanabe, Shinya Maeyama

Journal of Computational Physics Vol. 432 page： 110167-1 - 110167-13 2021.5

Effects of ion polarization and finite-beta on heat transport in slab electron-temperature-gradient driven turbulence Reviewed

Maeyama S., Kusaka S., Watanabe T. -H.

PHYSICS OF PLASMAS Vol. 28 ( 5 ) 2021.5

Small-Scale Dynamic Aurora Reviewed International coauthorship

Kataoka, R; Chaston, C; Knudsen, D; Lynch, KA; Lysak, RL; Song, Y; Rankin, R; Murase, K; Sakanoi, T; Semeter, J; Watanabe, TH; Whiter, D

SPACE SCIENCE REVIEWS Vol. 217 ( 1 ) 2021.2

Structure of the Electron Distribution Function and Induced Beam Instability in Collisionless Magnetic Reconnection with a Strong Guide Field Reviewed

Shimomura, K; Watanabe, T; Maeyama, S; Ishizawa, A

PLASMA AND FUSION RESEARCH Vol. 15 2020.11

Quiet, Discrete Auroral Arcs: Acceleration Mechanisms Reviewed International coauthorship

Lysak, R; Echim, M; Karlsson, T; Marghitu, O; Rankin, R; Song, Y; Watanabe, TH

SPACE SCIENCE REVIEWS Vol. 216 ( 5 ) 2020.7

Feedback and Ballooning Instabilities in the Magnetosphere-Ionosphere Coupling Reviewed

Watanabe, TH

GEOPHYSICAL RESEARCH LETTERS Vol. 47 ( 12 ) 2020.6

Extracting and Modeling the Effects of Small-Scale Fluctuations on Large-Scale Fluctuations by Mori-Zwanzig Projection Operator Method Reviewed

Maeyama, S; Watanabe, TH

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN Vol. 89 ( 2 ) 2020.2

Quiescent Discrete Auroral Arcs: A Review of Magnetospheric Generator Mechanisms Reviewed International coauthorship

Borovsky, JE; Birn, J; Echim, MM; Fujita, S; Lysak, RL; Knudsen, DJ; Marghitu, O; Otto, A; Watanabe, TH; Tanaka, T

SPACE SCIENCE REVIEWS Vol. 216 ( 1 ) 2019.12

Improved linearized model collision operator for the highly collisional regime Reviewed

Sugama, H; Matsuoka, S; Satake, S; Nunami, M; Watanabe, TH

PHYSICS OF PLASMAS Vol. 26 ( 10 ) 2019.10

Correlation between zonal flow shearing and entropy transfer rates in toroidal ion temperature gradient turbulence Reviewed

Miura, T; Watanabe, TH; Maeyama, S; Nakata, M

PHYSICS OF PLASMAS Vol. 26 ( 8 ) 2019.8

Persistence of Ion Temperature Gradient Turbulent Transport at Finite Normalized Pressure Reviewed

Ishizawa, A; Urano, D; Nakamura, Y; Maeyama, S; Watanabe, TH

PHYSICAL REVIEW LETTERS Vol. 123 ( 2 ) 2019.7

Implementation of a gyrokinetic collision operator with an implicit time integration scheme and its computational performance Reviewed

S. Maeyama, T.-H. Watanabe, Y. Idomura, M. Nakata, M. Nunami

Computer Physics Communications Vol. 235 page： 9 - 15 2019.2

Modeling of turbulent particle and heat transport in helical plasmas based on gyrokinetic analysis

Toda, S; Nakata, M; Nunami, M; Ishizawa, A; Watanabe, TH; Sugama, H

PHYSICS OF PLASMAS Vol. 26 ( 1 ) 2019.1

Transport Simulation for Helical Plasmas by use of Gyrokinetic Transport Model

Toda, S; Nakata, M; Nunami, M; Ishizawa, A; Watanabe, TH; Sugama, H

PLASMA AND FUSION RESEARCH Vol. 14 2019

Unstable Eigenmodes of the Feedback InstabilityWith Collision-Induced Velocity Shear Reviewed

T.-H. Watanabe and S. Maeyama

Geophysical Research Letters Vol. 45 ( 19 ) page： 10043 - 10049 2018.10

Eulerian variational formulations and momentum conservation laws for kinetic plasma systems Reviewed

H. Sugama, M. Nunami, S. Satake, and T.-H. Watanabe

Physics of Plasmas Vol. 25 ( 10 ) page： 102506 2018.10

Suppression of Ion-Scale Microtearing Modes by Electron-Scale Turbulence via Cross-Scale Nonlinear Interactions in Tokamak Plasmas Reviewed

S. Maeyama, T.-H. Watanabe, and A. Ishizawa

Phys. Rev. Lett. Vol. 119 page： 195002 2017.11

Suppression of Ion-Scale Microtearing Modes by Electron-Scale Turbulence via Cross-Scale Nonlinear Interactions in Tokamak Plasmas

Maeyama, S; Watanabe, TH; Ishizawa, A

PHYSICAL REVIEW LETTERS Vol. 119 ( 19 ) 2017.11

Structural Formation and Dynamics of Auroras in the Magnetosphere-Ionosphere Coupling Invited

Tomo-Hiko Watanabe

J. Plasma Fusion Res. Vol. 93 ( 9 ) page： 401-411 2017.9

A Reduced Transport Model for Ion Heat Diffusivity by Gyro-Kinetic Analysis with Kinetic Electrons in Helical Plasmas

Toda Shinichiro, Nakata Motoki, Nunami Masanori, Ishizawa Akihiro, Watanabe Tomo-Hiko, Sugama Hideo

PLASMA AND FUSION RESEARCH Vol. 12 2017.8

Multi-machine analysis of turbulent transport in helical systems via gyrokinetic simulation Reviewed

A. Ishizawa, Y. Kishimoto, T.-H. Watanabe, H. Sugama, K. Tanaka, S. Satake, S. Kobayashi, K. Nagasaki and Y. Nakamura

Nuclear Fusion Vol. 57 ( 6 ) page： 066010-1-13 2017.6

Cross-scale interactions between turbulence driven by electron and ion temperature gradients via sub-ion-scale structures

Maeyama, S; Watanabe, TH; Idomura, Y; Nakata, M; Ishizawa, A; Nunami, M

NUCLEAR FUSION Vol. 57 ( 6 ) 2017.6

Isotope Effects on Trapped-Electron-Mode Driven Turbulence and Zonal Flows in Helical and Tokamak Plasmas Reviewed

M. Nakata, M. Nunami, H. Sugama, and T.-H. Watanabe

Phys. Rev. Lett. Vol. 118 page： 165002 2017.4

Conservation laws for collisional and turbulent transport processes in toroidal plasmas with large mean flows Reviewed

H. Sugama, M. Nunami, M. Nakata, and T.-H. Watanabe

Physics of Plasmas Vol. 24 ( 2 ) page： 020701-1-5 2017.2

Generation of auroral turbulence through the magnetosphere-ionosphere coupling Invited Reviewed

Tomo-Hiko Watanabe, Hiroaki Kurata and Shinya Maeyama

New Journal of Physics Vol. 18 page： 125010 2016.12

Validation studies of gyrokinetic ITG and TEM turbulence simulations in a JT-60U tokamak using multiple flux matching

Motoki Nakata, Mitsuru Honda, Maiko Yoshida, Hajime Urano, Masanori Nunami, Shinya Maeyama, Tomo-Hiko Watanabe and Hideo Sugama

Nuclear Fusion Vol. 56 page： 086010 2016.7

Impact of hydrogen isotope species on microinstabilities in helical plasmas Reviewed

Motoki Nakata, Masanori Nunami, Hideo Sugama and Tomo-Hiko Watanabe

Plasma Physics and Controlled Fusion Vol. 58 page： 074008 2016.6

Benchmark of Electromagnetic Gyrokinetic Codes in High Performance Fusion Plasma Reviewed

Shinya MAEYAMA, Tomo-Hiko WATANABE, Hauke DOERK, Motoki NAKATA and Akihiro ISHIZAWA

Plasma and Fusion Research Vol. 11 page： 2403011 2016.2

Improved collision operator for plasma kinetic simulations with multi-species ions and electrons Reviewed

Motoki Nakata, Masanori Nunami, Tomo-Hiko Watanabe, Hideo Sugama

Computer Physics Communications Vol. 1197 page： 61-72 2015.8

Effects of collisions on conservation laws in gyrokinetic field theory Reviewed

H. Sugama, T.-H. Watanabe, and M. Nunami

Physics of Plasmas Vol. 22 ( 8 ) page： 082306-1 - 082306-19 2015.8

Cross-Scale Interactions between Electron and Ion Scale Turbulence in a Tokamak Plasma Reviewed

S. Maeyama, Y. Idomura, T.-H. Watanabe, M. Nakata, M. Yagi, N. Miyato, A. Ishizawa and M. Nunami

Physical Review Letters Vol. 114 page： 255002-1 - 255002-5 2015.6

Improved strong scaling of a spectral/finite difference gyrokinetic code for multi-scale plasma turbulence Reviewed

Shinya Maeyama, Tomohiko Watanabe, Yasuhiro Idomura,Motoki Nakata, Masanori Nunami, Akihiro Ishizawa

Parallel Computing Vol. 49 page： 1 - 12 2015.6

Development of Linearized Collision Operator for Multiple Ion Species in Gyrokinetic Flux-Tube Simulations Reviewed

Masanori NUNAMI, Motoki NAKATA, Tomo-Hiko WATANABE and Hideo SUGAMA

Plasma and Fusion Research Vol. 10 page： 1403058-1 - 1403058-9 2015.5

Nonlinear Entropy Transfer in ETG-TEM Turbulence via TEM Driven Zonal Flows Reviewed

Yuuichi ASAHI, Akihiro ISHIZAWA, Tomohiko WATANABE, Hideo SUGAMA, Hiroaki TSUTSUI and Shunji TSUJI-IIO

Plasma and Fusion Research Vol. 10 page： 1403047-1 - 1403047-9 2015.5

Turbulent transport of heat and particles in a high ion temperature discharge of the Large Helical Device Reviewed

A. Ishizawa, T.-H. Watanabe, H. Sugama, M. Nunami, K. Tanaka, S. Maeyama and N. Nakajima

Nuclear Fusion Vol. 55 page： 043024-1 - 043024-8 2015.3

Electromagnetic gyrokinetic simulation of turbulence in torus plasmas Reviewed

A. Ishizawa, S. Maeyama, T.-H. Watanabe, H. Sugama and N. Nakajima

Journal of Plasma Physics page： 1-41 2015.2

Flux tube train model for local turbulence simulation of toroidal plasmas Reviewed

T.-H. Watanabe, H. Sugama, A. Ishizawa and M. Nunami

Physics of Plasmas Vol. 22 ( 2 ) page： 022507-1 -- 022507-7 2015.2

How to apply a turbulent transport model based on a gyrokinetic simulation for the ion temperature gradient mode in helical plasmas Reviewed

S Toda, M Nunami, A Ishizawa, T -H Watanabe and H Sugama

Journal of Physics: Conference Series Vol. 561 page： 012020 2014.11

Verification of gyrokinetic microstability codes with an LHD configuration Reviewed

D. R. Mikkelsen, M. Nunami, T.-H. Watanabe, H. Sugama, and K. Tanaka

Physics of Plasmas Vol. 21 ( 11 ) page： 112305-1 - 112305-8 2014.11

A unified model of auroral arc growth and electron acceleration in themagnetosphere-ionosphere coupling Reviewed

T.-H. Watanabe

Geophysical Research Letters Vol. 41 page： 061166 2014.9

Quasilinear carbon transport in an impurity hole plasma in LHD Reviewed

D. R. Mikkelsen, K. Tanaka, M. Nunami, T.-H. Watanabe, H. Sugama, M. Yoshinuma, K. Ida, Y. Suzuki, M. Goto, S. Morita, B. Wieland, I. Yamada, R. Yasuhara, T. Tokuzawa, T. Akiyama, and N. A. Pablant

Physics of Plasmas Vol. 21 ( 8 ) page： 082302 2014.8

Exploring phase space turbulence in magnetic fusion plasmas Invited Reviewed

T-H Watanabe, Y Idomura, S Maeyama, M Nakata, H Sugama, M Nunami and A Ishizawa

Journal of Physics: Conference Series Vol. 510 ( 1 ) page： 012045 2014.5

Electromagnetic gyrokinetic turbulence in finite-beta helical plasmas Invited Reviewed

A. Ishizawa, T.-H. Watanabe, H. Sugama, S. Maeyama, and N. Nakajima

Physics of Plasmas Vol. 21 ( 5 ) page： 055905 2014.5

Regulation of electron temperature gradient turbulence by zonal flows driven by trapped electron modes Reviewed

Y. Asahi, A. Ishizawa, T.-H. Watanabe, H. Tsutsui and S. Tsuji-Iio

Physics of Plasmas Vol. 21 ( 5 ) page： 052306 2014.5

Comparison between kinetic-ballooning-mode-driven turbulence and ion-temperature-gradient-driven turbulence Reviewed

S. Maeyama, A. Ishizawa, T.-H. Watanabe, M. Nakata, N. Miyato, M. Yagi, and Y. Idomura

Physics of Plasmas Vol. 21 ( 5 ) page： 052301 2014.5

Local Gyrokinetic Vlasov Simulations with Realistic Tokamak MHD Equilibria Reviewed

Motoki NAKATA, Akinobu MATSUYAMA, Nobuyuki AIBA, Shinya MAEYAMA, Masanori NUNAMI and Tomo-Hiko WATANABE

Plasma and Fusion Research Vol. 9 page： 1403029 2014.4

Kinetic Ballooning Mode Turbulence Simulation based on Electromagnetic Gyrokinetics Reviewed

Shinya MAEYAMA, Akihiro ISHIZAWA, Tomohiko WATANABE, Motoki NAKATA, Naoaki MIYATO and Yasuhiro IDOMURA

Plasma and Fusion Research Vol. 9 page： 1203020 2014.3

Extended gyrokinetic field theory for time-dependent magnetic confinement fields Reviewed

H. Sugama, T.-H. Watanabe, and M. Nunami

Physics of Plasmas Vol. 21 ( 1 ) page： 012515 2014.1

Communication-overlap techniques for improved strong scaling of gyrokinetic Eulerian code beyond 100k cores on the K-computer Reviewed

Yasuhiro Idomura, Motoki Nakata, Susumu Yamada, Masahiko Machida, Toshiyuki Imamura, Tomohiko Watanabe, Masanori Nunami, Hikaru Inoue, Shigenobu Tsutsumi, Ikuo Miyoshi and Naoyuki Shida

International Journal of High Performance Computing Applications Vol. 28 ( 1 ) page： 73-86 2014.1

ジャイロ運動論による磁化プラズマ乱流の研究−核融合から宇宙まで Invited

洲鎌英雄, 渡邉智彦

日本物理学会誌 Vol. 68 ( 5 ) page： 296-304 2013.5

講座　核融合プラズマシミュレーションの技法－大規模並列計算環境の活用－　4.Vlasovシミュレーションのコーディング技法 Invited

渡邉智彦, 井戸村泰宏

プラズマ・核融合学会誌 Vol. 89 ( 3 ) page： 171-179 2013.3

講座　核融合プラズマシミュレーションの技法－大規模並列計算環境の活用－　1. はじめに Invited

渡邉智彦

プラズマ・核融合学会誌 Vol. 89 ( 1 ) page： 45-48 2013.1

Computation-Communication Overlap Techniques for Parallel Spectral Calculations in Gyrokinetic Vlasov Simulation Reviewed

Shinya MAEYAMA, Tomohiko WATANABE, Yasuhiro IDOMURA, Motoki NAKATA,Masanori NUNAMI and Akihiro ISHIZAWA

Plasma and Fusion Research Vol. 8 page： 1403150 2013

Numerical techniques for parallel dynamics in electromagnetic gyrokinetic Vlasov simulations Reviewed

S. Maeyama, A. Ishizawa, T.-H. Watanabe, N. Nakajima, S. Tsuji-Iio, H. Tsutsui

Computer Physics Communications Vol. 184 page： 2462 2013

Conservation of energy and momentum in nonrelativistic plasmas Reviewed

H. Sugama, T.-H. Watanabe, and M. Nunami

Phys. Plasmas Vol. 20 page： 024503 2013

Relation among ITG Turbulence, Zonal Flows, and Transport in Helical Plasmas Reviewed

M. Nunami, T.-H. Watanabe, and H. Sugama

Plasma and Fusion Research Vol. 8 page： 1203019 2013

Gyrokinetic turbulence simulations of high-beta tokamak and helical plasmas with full kinetic and hybrid models Reviewed

A. Ishizawa, S. Maeyama, T.-H. Watanabe, H. Sugama and N. Nakajima

Nuclear Fusion Vol. 53 page： 053007 2013

A reduced model for ion temperature gradient turbulent transport in helical plasmas Reviewed

M. Nunami, T.-H. Watanabe, and H. Sugama

Phys. Plasmas Vol. 20 page： 092307 2013

Reversible collisionless magnetic reconnection Reviewed

A. Ishizawa, and T.-H. Watanabe

Phys. Plasmas Vol. 20 page： 102116 2013

Gyrokinetic simulations of entropy transfer in high ion temperature LHD plasmas Reviewed

T.-H. Watanabe, H. Sugama, M. Nunami, K. Tanaka, and M. Nakata

Plasma Physics and Controlled Fusion Vol. 55 page： 014017 2013

Gyrokinetic simulation studies for non-axisymmetric plasma confinement: turbulent transport and entropy transfer Reviewed

T.-H. Watanabe, H. Sugama, M. Nunami, and M. Nakata

Journal of Physics: Conference Series Vol. 399 page： 012020 2012.12

Hybrid Alfvén resonant mode generation in the magnetosphere-ionosphere coupling system Reviewed

Y. Hiraki, and T.-H. Watanabe

Physics of Plasmas Vol. 19 page： 102904 2012.10

Gyrokinetic turbulent transport simulation of a high ion temperature plasma in large helical device experiment Reviewed

M. Nunami, T.-H. Watanabe, H. Sugama, and K. Tanaka

Physics of Plasmas Vol. 19 page： 042504 2012.4

Nonlinear entropy transfer via zonal flows in gyrokinetic plasma turbulence Reviewed

M. Nakata, T.-H. Watanabe, and H. Sugama

Physics of Plasmas Vol. 19 page： 022303 2012.2

A hybrid method of semi-Lagrangian and additive semi-implicit Runge-Kutta schemes for gyrokinetic Vlasov simulations Reviewed

S. Maeyama, A. Ishizawa, T.-H. Watanabe, N. Nakajima, S. Tsuji-Iio, and H. Tsutsui

Computer Physics Communications Vol. 183 page： 1986-1992 2012

Kinetic Simulations of Neoclassical and Anomalous Transport Processes in Helical Systems Reviewed

H. Sugama, T.-H. Watanabe, M. Nunami, S. Satake, S. Matsuoka, and K. Tanaka

Plasma and Fusion Research Vol. 7 page： 2403094 2012

Effects of equilibrium-scale radial electric fields on zonal flows and turbulence in helical configurations Reviewed

T.-H. Watanabe, H. Sugama, and M. Nunami

Nuclear Fusion Vol. 51 ( 12 ) page： 123003 2011.12

Quasisymmetric toroidal plasmas with large mean flows Reviewed

H. Sugama, T.-H. Watanabe, M. Nunami

Physics of Plasmas Vol. 18 ( 8 ) page： 082505 2011.8

Effects of parallel dynamics on vortex structures in electron temperature gradient driven turbulence Reviewed

M. Nakata, T.-H. Watanabe, H. Sugama, and W. Horton

Physics of Plasmas Vol. 18 ( 1 ) page： 012303 2011.1

Momentum balance and radial electric fields in axisymmetric and nonaxisymmetric toroidal plasmas Reviewed

H. Sugama, T.-H. Watanabe, M. Nunami, and S. Nishimura

Plasma Physics and Controlled Fusion Vol. 53 page： 024004 2011

Linear Gyrokinetic Analyses of ITG Modes and Zonal Flows in LHD with High Ion Temperature Reviewed

M. Nunami, T.-H. Watanabe, H. Sugama, and K. Tanaka

Plasma and Fusion Research Vol. 6 page： 1403001 2011

A Numerical Method for Parallel Particle Motions in Gyrokinetic Vlasov Simulations Reviewed

S. Maeyama, A. Ishizawa, T.-H. Watanabe, N. Nakajima, S. Tsuji-Iio, and H. Tsutsui

Plasma and Fusion Research Vol. 6 page： 2401028 2011

Feedback instability analysis for dipole configuration with ionospheric and magnetospheric cavities Reviewed

Y. Hiraki, and T.-H. Wataanbe

Journal of Geophysical Research Vol. 116 page： A11220 2011

Zonal Flow Dynamics and Control of Turbulent Transport in Stellarators Reviewed

P. Xanthopoulos, A. Mischchenko, P. Helander, H. Sugama, and T.-H. Watanabe

Physical Review Letters Vol. 107 page： 245002 2011

Effects of time-varying ExB flow on slab ion-temperature-gradient turbulence Reviewed

S. Maeyama, A. Ishizawa, T.-H. Watanabe, M. M. Skoric, N. Nakajima, S. Tsuji-Iio, and H. Tsutsui

Physics of Plasmas Vol. 17 ( 6 ) page： 062305 2010.6

Gyrokinetic Vlasov Code Including Full Three-dimensional Geometry of Experiments Reviewed

M. Nunami, T.-H. Watanabe, and H. Sugama

Plasma and Fusion Research Vol. 5 page： 016 2010.5

Formation of coherent vortex streets and transport reduction in electron temperature gradient driven turbulence Reviewed

M. Nakata, T.-H. Watanabe, H. Sugama, and W. Horton

Physics of Plasmas Vol. 17 ( 4 ) page： 042306 2010.4

Gyrokinetic simulations of turbulent transport Invited Reviewed

X. Garbet, Y. Idomura, L. Villard, and T.-H. Watanabe

Nuclear Fusion Vol. 50 ( 4 ) page： 043002 2010.3

Benchmark test of drift-kinetic and gyrokinetic codes through neoclassical transport simulations Reviewed

S. Satake, Y. Idomura, H. Sugama, and T.-H. Watanabe

Computer Physics Communications Vol. 181 ( 6 ) page： 1069-1076 2010.2

Feedback instability in the magnetosphere-ionosphere coupling system: Revisited Reviewed

T.-H. Watanabe

Physics of Plasmas Vol. 17 ( 2 ) page： 022904 2010.2

Enhancement of Residual Zonal Flows in Helical Systems with Equilibrium Radial Electric Fields Reviewed

H. Sugama, and T.-H. Watanabe

Contribution to Plasma Physics Vol. 50 ( 6-7 ) page： 571-575 2010

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Papers - WATANABE Tomohiko