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List of works by Katsumi Ida

A motional Stark effect diagnostic analysis routine for improved resolution of iota in the core of the large helical device.

scientific article published in September 2017

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

scientific article published on 31 October 2016

Beam emission spectroscopy with radially and poloidally elongated optical sightlines.

scientific article

Bifurcation phenomena of a magnetic island at a rational surface in a magnetic-shear control experiment

scientific article published on 30 January 2008

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

scientific article published in 2021

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

scientific article published in 2022

Density peaking in the JFT-2M tokamak plasma with counter neutral-beam injection

scientific article published on 01 January 1992

Development of beam emission spectroscopy for turbulence transport study in Heliotron J.

scientific article

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

scientific article published on 01 September 1990

Edge thermal transport barrier In LHD discharges

scientific article published on 01 January 2000

Effects of electron-cyclotron-resonance-heating-induced internal kink mode on the toroidal rotation in the KSTAR Tokamak.

scientific article

Energy confinement time and heat transport in initial neutral beam heated plasmas on the large helical device

scientific article published on 01 February 2000

Evidence for a toroidal-momentum-transport nondiffusive term from the JFT-2M tokamak

scientific article published on 01 March 1995

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

scientific article

Experimental evidence of a zonal magnetic field in a toroidal plasma

scientific article published on 18 April 2007

Fast ion charge exchange spectroscopy adapted for tangential viewing geometry in LHD

scientific article published on 01 October 2010

Flow damping due to stochastization of the magnetic field

scientific article

Grating spectrometer system for beam emission spectroscopy diagnostics using high-energy negative-ion-based neutral beam injection on LHD

scientific article published on 01 October 2010

High ion temperature mode in Heliotron-E

scientific article published on 01 February 1996

High spatial and temporal resolution charge exchange recombination spectroscopy on the HL-2A tokamak

scientific article published in October 2014

High- beta plasmas in the PBX tokamak

scientific article published on 01 October 1986

Hysteresis Relation between Turbulence and Temperature Modulation during the Heat Pulse Propagation into a Magnetic Island in DIII-D

scientific article published on 01 June 2018

Identification of zonal flows in a toroidal plasma

scientific article published on 13 October 2004

Ion temperature clamping in Wendelstein 7-X electron cyclotron heated plasmas

scientific article published in 2021

Ion-Bernstein-wave heating in the JIPPT-II-U tokamak plasma

scientific article published on 01 May 1985

Island dynamics in the large-helical-device plasmas

scientific article published on 22 January 2002

Joint meeting of 9th Asia Pacific-Transport Working Group (APTWG) & EU-US Transport Task Force (TTF) workshop

scientific article published in 2022

Measurement of derivative of ion temperature using high spatial resolution charge exchange spectroscopy with space modulation optics

scientific article published on 01 May 2008

Measurement of radial profiles of density ratio of helium to hydrogen ion using charge exchange spectroscopy with two-wavelength spectrometer.

scientific article published on December 2015

Measurements of radial profile of hydrogen and deuterium density in isotope mixture plasmas using bulk charge exchange spectroscopy

scientific article published on 01 September 2019

Microwave Doppler reflectometer system in LHD

scientific article published on 01 October 2012

Microwave frequency comb Doppler reflectometer applying fast digital data acquisition system in LHD

scientific article published on 01 October 2018

Non-resonant global mode in LHD partial collapse with net toroidal current

scientific article published in 2021

Nonlinear Excitation of Subcritical Instabilities in a Toroidal Plasma.

scientific article published on 8 January 2016

Novel analysis technique for measuring edge density fluctuation profiles with reflectometry in the Large Helical Device.

scientific article

Observation of Reversed-Shear Alfvén Eigenmodes Excited by Energetic Ions in a Helical Plasma

scientific article published in Physical Review Letters

Observation of a complex multistage transition in the JT-60U H-mode edge

scientific article published on 22 July 2010

Observation of long-distance radial correlation in toroidal plasma turbulence

scientific article published on 07 September 2011

Observation of parallel viscosity in a stellarator

scientific article published on 01 July 1991

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

scientific article published on 20 December 2001

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

scientific article published on 5 February 2004

Observation of the "self-healing" of an error field island in the large helical device

scientific article published on 07 September 2001

Observation of toroidal flow antiparallel to the <E(r) x B(straight theta)> drift direction in the hot electron mode plasmas in the compact helical system

scientific article published on 01 April 2001

Observation of z-dependent impurity accumulation in the PBX tokamak

scientific article published on 01 January 1987

Poloidal beam emission spectroscopy system for the measurement of density fluctuations in Large Helical Device

scientific article published on 01 October 2010

Quantification of Turbulent Driving Forces for the Geodesic Acoustic Mode in the JFT-2M Tokamak.

scientific article published in January 2018

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

scientific article published in 2022

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

scientific article published in 2022

Reconstruction of high temporal resolution Thomson scattering data during a modulated electron cyclotron resonance heating using conditional averaging

scientific article

Reduction of ion thermal diffusivity associated with the transition of the radial electric field in neutral-beam-heated plasmas in the large helical device

scientific article published on 01 June 2001

Reduction of ion thermal diffusivity inside a magnetic island in JT-60U tokamak plasma

scientific article published on 07 August 2012

Role of edge magnetic shear on the limiter H-mode transition of the JIPP T-IIU tokamak

scientific article published on 01 April 1990

Rotation characteristics during the resonant magnetic perturbation induced edge localized mode suppression on the KSTAR

scientific article published on 01 November 2014

Sawtooth oscillation in current-carrying plasma in the large helical device

scientific article published on 20 May 2003

Self-regulated oscillation of transport and topology of magnetic islands in toroidal plasmas

scientific article

Slow transition of energy transport in high-temperature plasmas.

scientific article published on 31 March 2006

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

scientific article

Strong Destabilization of Stable Modes with a Half-Frequency Associated with Chirping Geodesic Acoustic Modes in the Large Helical Device.

scientific article published on 8 January 2016

Tangential neutral-beam-driven instabilities in the Princeton beta experiment

scientific article published on 01 August 1986

Transition between internal transport barriers with different temperature-profile curvatures in JT-60U Tokamak plasmas

scientific article published on 31 July 2008

Transition of the radial electric field by electron cyclotron heating in the CHS heliotron/torsatron

scientific article published on 01 October 1993

Trigger mechanism for the abrupt loss of energetic ions in magnetically confined plasmas

scientific article published on 12 February 2018

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

scientific article published on 2 November 2017

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