World's Best Scientists 2026 revealed!
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Engineering and Technology
Japan
2025

D-Index & Metrics

Engineering and Technology

D-Index
66
Citations
15035
World Ranking
1429
National Ranking
11

Research.com Recognitions

  • 2025 - Research.com Engineering and Technology in Japan Leader Award

Overview

What is he best known for?

The fields of study he is best known for:

  • Electron
  • Plasma
  • Optics

His scientific interests lie mostly in Atomic physics, Plasma, Large Helical Device, Tokamak and Electron. Katsumi Ida interconnects Electron temperature, Magnetohydrodynamics, Magnetic confinement fusion, Neutral beam injection and Beta in the investigation of issues within Atomic physics. Plasma connects with themes related to Beam in his study.

The various areas that Katsumi Ida examines in his Large Helical Device study include Magnetic flux, Convection, Nuclear magnetic resonance and Scaling. His work is dedicated to discovering how Tokamak, Pinch are connected with Plasma diagnostics and other disciplines. His study in the field of Ambipolar diffusion also crosses realms of Doppler effect.

His most cited work include:

  • Identification of zonal flows in a toroidal plasma. (271 citations)
  • Edge electric-field profiles of H-mode plasmas in the JFT-2M tokamak. (248 citations)
  • Overview of the large helical device project (217 citations)

What are the main themes of his work throughout his whole career to date?

Plasma, Atomic physics, Large Helical Device, Tokamak and Electron are his primary areas of study. His study in the fields of Toroid, Electron temperature, Electron density and Divertor under the domain of Plasma overlaps with other disciplines such as Maple. His Atomic physics study incorporates themes from Cyclotron, Beam, Magnetohydrodynamics, Magnetic confinement fusion and Neutral beam injection.

His Large Helical Device research integrates issues from Computational physics, Optics, Plasma diagnostics, Condensed matter physics and Beta. His Tokamak study combines topics from a wide range of disciplines, such as Turbulence and Stellarator. His studies in Electron integrate themes in fields like Thermal diffusivity and Collisionality.

He most often published in these fields:

  • Plasma (68.66%)
  • Atomic physics (61.51%)
  • Large Helical Device (39.33%)

What were the highlights of his more recent work (between 2015-2021)?

  • Plasma (68.66%)
  • Atomic physics (61.51%)
  • Large Helical Device (39.33%)

In recent papers he was focusing on the following fields of study:

Katsumi Ida mostly deals with Plasma, Atomic physics, Large Helical Device, Electron and Mechanics. His work carried out in the field of Plasma brings together such families of science as Deuterium, Kinetic isotope effect and Turbulence. His Turbulence research is multidisciplinary, incorporating elements of Electron temperature, Tokamak, Curvature and Condensed matter physics.

His work on Helium as part of general Atomic physics study is frequently linked to Spectroscopy, bridging the gap between disciplines. His work deals with themes such as Computational physics, Beam, Neutral beam injection, Analytical chemistry and Electron density, which intersect with Large Helical Device. His work investigates the relationship between Electron and topics such as Thermal transport that intersect with problems in Transient.

Between 2015 and 2021, his most popular works were:

  • Major results from the first plasma campaign of the Wendelstein 7-X stellarator (83 citations)
  • Overview of first Wendelstein 7-X high-performance operation (71 citations)
  • Extension of the operational regime of the LHD towards a deuterium experiment (61 citations)

In his most recent research, the most cited papers focused on:

  • Electron
  • Optics
  • Plasma

The scientist’s investigation covers issues in Plasma, Atomic physics, Large Helical Device, Deuterium and Turbulence. His Plasma study combines topics in areas such as Condensed matter physics and Kinetic isotope effect. The study incorporates disciplines such as Thermal diffusivity, Electron, Transport barrier and Collisionality in addition to Atomic physics.

Much of his study explores Large Helical Device relationship to Neutral beam injection. His studies examine the connections between Deuterium and genetics, as well as such issues in Electron density, with regards to Isotope, Beam and Particle. His research in Toroid intersects with topics in Electron temperature, Modulation and Lissajous curve.

Best Publications

  • Edge electric-field profiles of H-mode plasmas in the JFT-2M tokamak.

    Ida K;Hidekuma S;Miura Y;Fujita T

  • Overview of the large helical device project

    A. Iiyoshi;A. Komori;A. Ejiri;M. Emoto

  • Experimental studies of the physical mechanism determining the radial electric field and its radial structure in a toroidal plasma

    Katsumi Ida

  • Electron thermal transport barrier and density fluctuation reduction in a toroidal helical plasma

    A. Fujisawa;H. Iguchi;T. Minami;Y. Yoshimura

  • Initial physics achievements of large helical device experiments

    O. Motojima;H. Yamada;A. Komori;N. Ohyabu

  • Overview of first Wendelstein 7-X high-performance operation

    T. Klinger;T. Klinger;T. Andreeva;S. Bozhenkov;C. Brandt

  • Major results from the first plasma campaign of the Wendelstein 7-X stellarator

    R.C. Wolf;A. Ali;A. Alonso;J. Baldzuhn

  • Observation of plasma flow at the magnetic island in the large helical device.

    K. Ida;N. Ohyabu;T. Morisaki;Y. Nagayama

  • Goal and Achievements of Large Helical Device Project

    A. Komori;H. Yamada;S. Imagawa;O. Kaneko

  • Characteristics of electron heat transport of plasma with an electron internal-transport barrier in the large helical device.

    K. Ida;T. Shimozuma;H. Funaba;K. Narihara

  • Extension of the operational regime of the LHD towards a deuterium experiment

    Y. Takeiri;Y. Takeiri;T. Morisaki;T. Morisaki;M. Osakabe;M. Osakabe;M. Yokoyama;M. Yokoyama

  • Core electron-root confinement (CERC) in helical plasmas

    M. Yokoyama;H. Maassberg;C. D. Beidler;V. Tribaldos

  • Spatiotemporal structures of edge limit-cycle oscillation before L-to-H transition in the JFT-2M tokamak.

    T. Kobayashi;K. Itoh;T. Ido;K. Kamiya

  • Configuration flexibility and extended regimes in Large Helical Device

    H Yamada;A Komori;N Ohyabu;O Kaneko

  • Neoclassical plasma viscosity and transport processes in non-axisymmetric tori

    K.C. Shaing;K. Ida;S.A. Sabbagh

  • Energetic ion driven MHD instabilities observed in the heliotron/torsatron devices Compact Helical System and Large Helical Device

    K. Toi;K. Toi;M. Takechi;M. Isobe;N. Nakajima

  • Observation of an impurity hole in a plasma with an ion internal transport barrier in the Large Helical Device

    K. Ida;M. Yoshinuma;M. Osakabe;K. Nagaoka

  • Observation of reduced heat transport inside the magnetic island O point in the large helical device.

    S. Inagaki;N. Tamura;K. Ida;Y. Nagayama

  • Space‐ and time‐resolved measurements of ion temperature with the CVI 5292‐Å charge‐exchange recombination line after subtracting background radiation

    K. Ida;S. Hidekuma

  • Charge-Exchange Spectroscopy with Pitch-Controlled Double-Slit Fiber Bundle on LHD

    M. Yoshinuma;K. Ida;M. Yokoyama;M. Osakabe

  • Edge poloidal rotation profiles of H-mode plasmas in the JFT-2M tokamak

    K. Ida;S. Hidekuma;M. Kojima;Y. Miura

  • Rotation and momentum transport in tokamaks and helical systems

    K. Ida;J.E. Rice

  • Formation of electron internal transport barriers by highly localized electron cyclotron resonance heating in the large helical device

    T Shimozuma;S Kubo;H Idei;Y Yoshimura

  • An Overview of the Large Helical Device Project

    A. "Iiyoshi;A. Komori;A. Ejiri;M. Emoto

Frequent Co-Authors

Satoshi Morita
Satoshi Morita Kyoto University
Ken Matsuoka
Ken Matsuoka Kyushu University

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