Kenichi Nagaoka

教授/Professor

核融合科学研究所/National Institute for Fusion Science

Japan

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Kenichi Nagaoka is a Professor at the National Institute for Fusion Science in Japan. His research focuses on plasma physics, particularly in areas such as plasma stability, turbulent transport, and advanced measurement techniques in magnetically confined plasmas. Recent contributions include investigations into shear flows in LHD plasma and the dynamics of negative ion beams. His work aims to improve the performance of fusion reactors through innovative experimental methodologies.

Articles (16)

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2025

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2025

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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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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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2021

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2021

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2020

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2020

Collaborators (17)

Katsumi Ida

Professor

National Institute for Fusion Science

JAPAN

Kenichi Nagaoka

Research Interests

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Articles (16)

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

Measurement of x-ray bremsstrahlung radiation from high energy electrons by stochastic acceleration in Heliotron J

Density and space potential measurement through the plasma grid aperture of negative ion source

Application of two-dimensional temperature response functions for reconstruction of divertor heat flux profile in commercial fusion reactors

Experimental study of the effect of geodesic curvature on turbulent transport in magnetically confined plasma

MHD stability trends and improved performance of LHD inward-shifted configurations: The role of the neutral beam current drive and thermal plasma density

Analysis of the ECH effect on EPM/AE stability in Heliotron J plasma using a Landau closure model

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

Nonuniform plasma meniscus modelling based on backward calculation of negative ion beamlet

Challenges toward improvement of deuterium-injection power in the Large Helical Device negative-ion-based NBIs

Abundance ratio of multiple velocity distribution components in a single negative ion beamlet produced by a cesium-seeded negative ion source

Direct observation of the non-locality of non-diffusive counter-gradient electron thermal transport during the formation of hollow electron-temperature profiles in the Large Helical Device

Isotope effects on transport in LHD

Characterization of isotope effect on ion internal transport barrier and its parameter dependence in the Large Helical Device

Modeling of the ECCD injection effect on the Heliotron J and LHD plasma stability

Observation of clump structure in transported particle orbit using an upgraded neutral particle analyzer during TAE burst in LHD

Collaborators (17)

Katsumi Ida

Kazunobu Nagasaki

Shinsuke OHSHIMA

Shinji Yoshimura

Katsunori Ikeda

RYOSUKE SEKI

Mototake Yoh-ichi

Heishun Zen

Tokihiko Tokuzawa

Felix Warmer

Shigeru Inagaki

Hideaki Ohgaki

Chihiro Suzuki

Yasuaki Haba

Katsuyoshi Tsumori

Motoki Nakata

Yuki Hayashi

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