Katsumi Ida

Professor

National Institute for Fusion Science

Japan

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About

Professor Katsumi Ida is a faculty member at the National Institute for Fusion Science in Japan. His research focuses on plasma physics, particularly in the areas of charge exchange spectroscopy, density profile measurements, and magnetic fluctuations in fusion plasmas. His recent publications investigate various turbulent states in magnetic fusion plasmas and their implications for achieving burning plasma conditions.

Articles (20)

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2025

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2024

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2024

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2024

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2023

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2023

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2022

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2022

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2022

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2022

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2022

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2022

Collaborators (18)

J. Kohagura

JAPAN

Katsumi Ida

Research Interests

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Articles (20)

In situ calibration of charge exchange spectroscopy and measurements of absolute density profiles in the plasma with high boron concentration

In-situ calibration of charge exchange spectroscopy for spatially resolved measurements of helium-hydrogen density ratio in Wendelstein 7-X

Bicoherence Analysis on the Density and Magnetic Fluctuations of H-mode Plasma in LHD

Bifurcation from L-mode to internal transport barrier triggered by a magnetic island in tokamak plasmas

Full-image operation of fast charge exchange recombination spectroscopy with high-spatial and high-wavelength resolutions in large helical device

Experimental discoveries of a variety of turbulent states of magnetic fusion plasma

Generation of shear flows induced by AE / EPM in LHD plasma

Overview of Large Helical Device experiments of basic plasma physics for solving crucial issues in reaching burning plasma conditions

Electron-scale turbulence characteristics with varying electron temperature gradient in LHD

Detection of bifurcation in phase-space perturbative structures across transient wave–particle interaction in laboratory plasmas

Correction: Isotope effect of transport and key physics in the isotope mixture plasmas

A reduced-turbulence regime in the Large Helical Device upon injection of low-Z materials powders

Isotope effect of transport and key physics in the isotope mixture plasmas

Phase-space tomography in magnetically confined plasmas

Confinement improvement during detached phase with RMP application in deuterium plasmas of LHD

Behavior of geodesic acoustic mode and limit-cycle oscillation approaching L-H transition in JFT-2M tokamak

Receiver circuit improvement of dual frequency-comb ka-band Doppler backscattering system in the large helical device (LHD)

Direct observation of mass-dependent collisionless energy transfer via Landau and transit-time damping

Real-time wall conditioning and recycling modification utilizing boron and boron nitride powder injections into the Large Helical Device

Recent results from deuterium experiments on the large helical device and their contribution to fusion reactor development

Collaborators (18)

J. Kohagura

Ryuichi Sakamoto

Kazunobu Nagasaki

Kenji Tanaka

Markus J. Markl

Tokihiko Tokuzawa

Shigeru Inagaki

Masahiro Tanaka

Satoshi Odachi

Christopher G. Albert

Suguru Masuzaki

Gakushi Kawamura

毅 井戸

Andreas Dinklage

Kenichi Nagaoka

Mamoru Shoji

Yuki Hayashi

Tatsuya Kobayashi

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