Research Output 1979 2019

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1979
8 Citations (Scopus)

CONFINEMENT OF OHMICALLY HEATED PLASMAS AND TURBULENT HEATING IN HIGH-MAGNETIC-FIELD TOKAMAK TRIAM-1.

Hiraki, N., Itoh, S., Kawai, Y., Toi, K., Nakamura, K. & Mitarai, O., Jan 1 1979, In : Reports of Research Institute for Applied Mechanics (Kyushu University). 27, 85, p. 85-98 14 p.

Research output: Contribution to journalArticle

Plasma confinement
Fusion reactors
Tokamak devices
Magnetic fields
Plasmas
1980
3 Citations (Scopus)

EFFICIENT ION HEATING OF TOKAMAK PLASMA BY APPLICATION OF POSITIVE AND NEGATIVE CURRENT PULSE IN TRIAM-1.

Toi, K., Hiraki, N., Nakamura, K., Mitarai, O., Kawai, Y. & Itoh, S., Jan 1 1980, In : Reports of Research Institute for Applied Mechanics (Kyushu University). 27, 86, p. 111-123 13 p.

Research output: Contribution to journalArticle

Plasmas
Heating
Ions
Plasma confinement
Joule heating

ELECTRON DENSITY MEASUREMENTS IN THE TRIAM-1 TOKAMAK.

Mitarai, O., Nakashima, H., Nakamura, K., Hiraki, N., Toi, K., Kawai, Y. & Itoh, S., Jan 1 1980, In : Reports of Research Institute for Applied Mechanics (Kyushu University). 27, 86, p. 147-158 12 p.

Research output: Contribution to journalArticle

Electron density measurement
Interferometers
Microwaves
Plasmas
6 Citations (Scopus)

ION TEMPERATURE MEASUREMENT BY NEUTRAL ENERGY ANALYZER IN HIGH-FIELD TOKAMAK TRIAM-1.

Nakamura, K., Hiraki, N., Toi, K. & Itoh, S., Jan 1 1980, In : Reports of Research Institute for Applied Mechanics (Kyushu University). 27, 86, p. 125-146 22 p.

Research output: Contribution to journalArticle

Temperature measurement
Ions
Temperature
Scanning
Plasmas

ION TEMPERATURE MEASUREMENTS OF TURBULENTLY HEATED TRIAM-1 PLASMAS BY THE DOPPLER-BROADENING OF VISIBLE LINES.

Hiraki, N., Nakamura, K., Toi, K. & Itoh, S., Jan 1 1980, In : Reports of Research Institute for Applied Mechanics (Kyushu University). 28, 87, p. 19-25 7 p.

Research output: Contribution to journalArticle

Doppler effect
Temperature measurement
Plasmas
Ions
Temperature

OBSERVATION OF THE SKIN-LIKE PROFILES OF ELECTRON TEMPERATURE AND DENSITY OF TURBULENTLY HEATED PLASMAS IN THE TRIAM-1 TOKAMAK.

Hiraki, N., Nakamura, K., Toi, K. & Itoh, S., Jan 1 1980, In : Reports of Research Institute for Applied Mechanics (Kyushu University). 28, 87, p. 13-18 6 p.

Research output: Contribution to journalArticle

Electron temperature
Carrier concentration
Skin
Plasmas
Heating
1981
4 Citations (Scopus)

Dose and energy dependence of ion-induced release of deuterium from molybdenum by low energy hydrogen ions

Yamada, R., Nakamura, K., Sone, K. & Saidoh, M., Jan 1 1981, In : Journal of Nuclear Materials. 101, 1-2, p. 100-108 9 p.

Research output: Contribution to journalArticle

Molybdenum
Deuterium
hydrogen ions
molybdenum
Protons
5 Citations (Scopus)

Ion temperature measurements of turbulently heated tokamak plasma by doppler-broadening of visible lines in triam-1

Hiraki, N., Nakamura, K., Toi, K. & Itoh, S., Jan 1 1981, In : Japanese Journal of Applied Physics. 20, 1, p. 183 1 p.

Research output: Contribution to journalArticle

Doppler effect
ion temperature
Temperature measurement
temperature measurement
Plasmas
7 Citations (Scopus)

Measurements of the dispersion relation of the low-frequency ion acoustic instability in the turbulently heated triam-1 tokamak plasma

Mitarai, O., Watanabe, T., Nakamura, Y., Nakamura, K., Hiraki, N., Toi, K., Kawai, Y. & Itoh, S., Jan 1 1981, In : Japanese Journal of Applied Physics. 20, 1, p. L41-L41

Research output: Contribution to journalArticle

microwave scattering
acoustic instability
Plasma stability
frequency ranges
Acoustics
5 Citations (Scopus)

Temporal evolutions of electron temperature and density of turbulently-heated tokamak plasmas in TRIAM-1

Hiraki, N., Nakamura, K., Nakamura, Y. & Itoh, S., Jan 1 1981, In : Japanese Journal of Applied Physics. 20, 4, p. 769-773 5 p.

Research output: Contribution to journalArticle

Electron temperature
Carrier concentration
Skin
electron energy
Plasmas

Time behaviours of visible lines in turbulently heated TRIAM-1 plasma

Hiraki, N., Nakamura, K., Nakamura, Y. & Itoh, S., Jan 1 1981, In : Japanese Journal of Applied Physics. 20, 8, p. 1507-1513 7 p.

Research output: Contribution to journalArticle

radiance
Plasma heating
Plasmas
Heating
Ionization potential
1982
3 Citations (Scopus)

Onset of current-driven turbulence on application of a low toroidal electric field

Nakamura, Y., Watanabe, T., Nagao, A., Nakamura, K., Hiraki, N. & Itoh, S., Jan 1 1982, In : Japanese Journal of Applied Physics. 21, 6R, p. 902-905 4 p.

Research output: Contribution to journalArticle

Turbulence
turbulence
Electric fields
acoustic instability
electric fields
3 Citations (Scopus)

Relaxation of ion energy spectrum just after turbulent heating pulse in triam-1 tokamak

Nakamura, K., Hiraki, N., Nakamura, Y. & Itoh, S., Jan 1 1982, In : Japanese Journal of Applied Physics. 21, 7, p. 1095-1098 4 p.

Research output: Contribution to journalArticle

pulse heating
energy spectra
Heating
Ions
Fokker Planck equation
1983
1 Citation (Scopus)

Electron and ion energy distribution functions in slide-away regime of TRIAM-1 Tokamak

Nakamura, K., Satoh, T., Toi, K., Hiraki, N., Nakamura, Y. & Itoh, S., Jan 1 1983, In : Japanese Journal of Applied Physics. 22, 2R, p. 315-318 4 p.

Research output: Contribution to journalArticle

chutes
Distribution functions
energy distribution
distribution functions
electron energy
1984

Numerical Calculation of “Actual” Radial Profile of Ion Temperature From 4’Measured” Energy Spectra of Charge-Exchanged Neutrals

Nakamura, K., Hiraki, N., Toi, K. & Itoh, S., Oct 1984, In : Japanese Journal of Applied Physics. 23, 10, p. 1368-1372 5 p.

Research output: Contribution to journalArticle

ion temperature
energy spectra
transport theory
temperature profiles
Ions
1985
13 Citations (Scopus)

Analysis of optimal feedback control of vertical plasma position in a tokamak system

Moriyama, S. I., Nakamura, K., Nakamura, Y. & Itoh, S., Jan 1 1985, In : Japanese Journal of Applied Physics. 24, 7 R, p. 849-855 7 p.

Research output: Contribution to journalArticle

feedback control
Feedback control
power supplies
Plasmas
optimal control
1987
3 Citations (Scopus)

Field-access scheme of bloch line memory

Asada, H., Shigenobu, M., Nakamura, K., Yoshimatsu, N. & Konishi, S., Jan 1 1987, In : IEEE Transactions on Magnetics. 23, 5, p. 2326-2328 3 p.

Research output: Contribution to journalArticle

Garnets
Data storage equipment
Magnetic circuits
Domain walls
Coercive force

POSITRON ANNIHILATION AND RESISTIVITY RECOVERY OF Ni-Si ALLOYS IRRADIATED BY 28 MeV ELECTRONS AT 77 K.

Watanabe, H., Abe, H., Kuramoto, E. & Yoshida, N., Dec 1 1987, In : Annual Reports of the Research Reactor Institute, Kyoto University. 20, p. 146-149 4 p.

Research output: Contribution to journalArticle

Positron annihilation
Point defects
defect
electrical resistivity
Recovery
1988

Control of Vertical Bloch Lines in Stripe Domain Head

Nakamura, K., Matsuyama, K. & Konishi, S., 1988, In : IEEE Translation Journal on Magnetics in Japan. 3, 6, p. 459-461 3 p.

Research output: Contribution to journalArticle

Magnetic thin films
17 Citations (Scopus)

Defect accumulation in JPCA and its high purity model alloys irradiated with D-T neutrons

Muroga, T., Miyamoto, Y., Watanabe, H. & Yoshida, N., Jul 2 1988, In : Journal of Nuclear Materials. 155-157, PART 2, p. 810-814 5 p.

Research output: Contribution to journalArticle

Neutrons
purity
neutrons
Defects
defects
2 Citations (Scopus)

EFFECTS OF MINOR ADDITION OF PHOSPHORUS ON POINT DEFECT BEHAVIOR AND MICROSTRUCTURAL EVOLUTION IN AUSTENITIC STAINLESS STEEL.

Watanabe, H., Aoki, A., Murakami, H., Muroga, T. & Yoshida, N., Jun 1988, In : Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals. 52, 6, p. 536-545 10 p.

Research output: Contribution to journalArticle

austenitic stainless steels
Microstructural evolution
Point defects
Austenitic stainless steel
Phosphorus
73 Citations (Scopus)

Effects of phosphorus on defect behavior, solute segregation and void swelling in electron irradiated FeCrNi alloys

Watanabe, H., Aoki, A., Murakami, H., Muroga, T. & Yoshida, N., Jul 2 1988, In : Journal of Nuclear Materials. 155-157, PART 2, p. 815-822 8 p.

Research output: Contribution to journalArticle

swelling
Phosphorus
Swelling
phosphorus
voids
11 Citations (Scopus)

Effects of purity on damage evolution in Ni irradiated by 14 MeV neutrons

Yoshida, N., Muroga, T., Watanabe, H., Araki, K. & Miyamoto, Y., Jul 2 1988, In : Journal of Nuclear Materials. 155-157, PART 2, p. 1222-1226 5 p.

Research output: Contribution to journalArticle

Vacancies
Neutrons
purity
Stacking faults
damage
14 Citations (Scopus)

Fission-fusion correlation of void swelling in pure nickel

Muroga, T., Watanabe, H., Araki, K. & Yoshida, N., Jul 2 1988, In : Journal of Nuclear Materials. 155-157, PART 2, p. 1290-1295 6 p.

Research output: Contribution to journalArticle

Nickel
swelling
fission
Swelling
voids
3 Citations (Scopus)

Magnetic field fluctuations in ripple reduction experiments on the REPUTE-1 RFP

Hattori, K., Itami, K., Fujita, T., Morikawa, J., Nihei, H., Yoshida, Z., Inoue, N., Ji, H., fujisawa, A., Asakura, N., Yamagishi, K., Shinohara, T., Nagayama, Y., Toyama, H. & Miyamoto, K., Jan 1 1988, In : Nuclear Fusion. 28, 2, p. 311-317 7 p.

Research output: Contribution to journalArticle

ripples
magnetic fields
low frequencies
electric potential
8 Citations (Scopus)

Positron annihilation lifetime measurement of electron irradiated Fe-Cr-Ni-P alloy

Watanabe, H., Kuramoto, E. & Yoshida, N., Jan 1 1988, In : Transactions of the Japan Institute of Metals. 29, 10, p. 769-773 5 p.

Research output: Contribution to journalArticle

Positron annihilation
positron annihilation
life (durability)
Electrons
Phosphorus
4 Citations (Scopus)

Precipitate resolution in an electron irradiated ni-si alloy

Watanabe, H., Muroga, T., Yoshida, N. & Kitajima, K., Jan 1 1988, In : Journal of Nuclear Materials. 158, C, p. 179-187 9 p.

Research output: Contribution to journalArticle

Precipitates
precipitates
Electrons
electrons
solutes
2 Citations (Scopus)

Synergistic effects of high-heat loading, hydrogen and impurity deposition on surface modification of a tokamak limiter

Yoshida, N., Tokunaga, K., Muroga, T., Miyamoto, Y. & Itoh, S., Jul 2 1988, In : Journal of Nuclear Materials. 155-157, PART 1, p. 431-437 7 p.

Research output: Contribution to journalArticle

Limiters
Surface treatment
Hydrogen
Impurities
heat
1989
3 Citations (Scopus)
Electron irradiation
austenitic stainless steels
Point defects
electron irradiation
Austenitic stainless steel
4 Citations (Scopus)

Estimation of plasma elongation and position on noncircular tokamak triam-1m

Moriyama, S. I., Nakamura, K., Kawasaki, S., Jotaki, E., Nagao, A., Nakamura, Y., Hiraki, N. & Itoh, S., Aug 1 1989, In : Japanese Journal of Applied Physics. 28, 8R, p. 1479-1485 7 p.

Research output: Contribution to journalArticle

elongation
Elongation
Plasmas
magnetic coils
Magnetohydrodynamics
5 Citations (Scopus)

Ideal mhd instabilities with finite β-effect in reversed field pinch

fujisawa, A., Onodera, S. & Miyamoto, K., Jan 1 1989, In : journal of the physical society of japan. 58, 2, p. 473-481 9 p.

Research output: Contribution to journalArticle

configurations
diagrams
profiles
8 Citations (Scopus)

Soft x-ray spectrum measurement of the ultralong discharge in the triam-1m tokamak

Nagao, A., Jotaki, E., Moriyama, S. I., Nakamura, K., Nakamura, Y., Hiraki, N. & Itoh, S., Aug 1 1989, In : Japanese Journal of Applied Physics. 28, 8R, p. 1486-1490 5 p.

Research output: Contribution to journalArticle

Electron temperature
x ray spectra
electron energy
X rays
Plasmas
1990
20 Citations (Scopus)

Correlation of fast neutron, fusion neutron and electron irradiations based on the dislocation loop density

Muroga, T., Watanabe, H. & Yoshida, N., Nov 2 1990, In : Journal of Nuclear Materials. 174, 2-3, p. 282-288 7 p.

Research output: Contribution to journalArticle

Electron irradiation
Neutron irradiation
neutron irradiation
electron irradiation
fast neutrons
9 Citations (Scopus)

Radial profiles of hard X-ray emission during steady state current drive in the TRIAM-1M tokamak

Nakamura, Y., Takabatake, Y., Jotaki, E., Moriyama, S., Nagao, A., Nakamura, K., Hiraki, N. & Itoh, S., Jan 1 1990, In : Nuclear Fusion. 30, 4, p. 689-700 12 p.

Research output: Contribution to journalArticle

profiles
x rays
high energy electrons
sodium iodides
plasma currents
2 Citations (Scopus)

Surface modification of tokamak fixed limiter used in high-field tokamak triam-1

Tokunaga, K., Miyamoto, Y., Muroga, T., Yoshida, N., Itoh, S. & Triam, G., Jan 1 1990, In : journal of nuclear science and technology. 27, 4, p. 333-342 10 p.

Research output: Contribution to journalArticle

Limiters
Surface treatment
Impurities
damage
Thermal load

Surface Modification of Tokamak Fixed Limiter Used in High-Field Tokamak TRIAM-1

Tokunaga, K., Fujiwara, T., Miyamoto, Y., Muroga, T., Yoshida, N., Itoh, S. & Group, T., Jan 1 1990, In : journal of nuclear science and technology. 27, 4, p. 333-342 10 p.

Research output: Contribution to journalArticle

Limiters
Surface treatment
Impurities
damage
Thermal load
2 Citations (Scopus)

The effect of pyrolytic carbon coating on gas emission and sublimation of graphite induced by pulse laser beams

Muroga, T., Kamezaki, H., Tokunaga, K. & Yoshida, N., Dec 3 1990, In : Journal of Nuclear Materials. 176-177, C, p. 450-454 5 p.

Research output: Contribution to journalArticle

Graphite
Sublimation
Thermal load
Gas emissions
sublimation
16 Citations (Scopus)

Ultra-long pulse operation using lower hybrid waves on the superconducting high field tokamak triam-im

Moriyama, S., Nakamura, Y., Nagao, A., Jotaki, E., Nakamura, K., Hiraki, N. & Itoh, S., Jan 1 1990, In : Nuclear Fusion. 30, 1, p. 47-56 10 p.

Research output: Contribution to journalArticle

pulses
plasma currents
current distribution
impurities
gases
1991
22 Citations (Scopus)

Anomalous ion temperature and plasma resistance due to mhd fluctuations in repute-1 reversed field pinch plasmas

fujisawa, A., Ji, H., Yamagishi, K., Shinohara, S., Toyama, H. & Miyamoto, K., Jan 1 1991, In : Nuclear Fusion. 31, 8, p. 1443-1453 11 p.

Research output: Contribution to journalArticle

plasma pinch
ion temperature
profiles
electron energy
temperature profiles
18 Citations (Scopus)

Effect of combined addition of phosphorus and titanium on microstructural evolution in Fe-Cr-Ni alloys

Watanabe, H., Aoki, A., Muroga, T. & Yoshida, N., Jan 1 1991, In : Journal of Nuclear Materials. 179-181, PART 1, p. 529-533 5 p.

Research output: Contribution to journalArticle

Microstructural evolution
Titanium
Phosphorus
phosphorus
titanium
6 Citations (Scopus)

Electron microscopy of materials modification induced by tokamak plasma

Tokunaga, K., Muroga, T., Miyamoto, Y., Fujiwara, T., Yoshida, N., Nakamura, K., Hiraki, N. & Itoh, S., Jan 1 1991, In : Journal of Nuclear Materials. 179-181, PART 1, p. 356-359 4 p.

Research output: Contribution to journalArticle

Electron microscopy
electron microscopy
Electron microscopes
Tokamak devices
electron microscopes
3 Citations (Scopus)

Modification of a limiter under ultra long pulse operation in the superconducting high-field tokamak TRIAM-1M

Tokunaga, K., Fujiwara, T., Yoshida, N., Muroga, T. & Itoh, S., Jan 1 1991, In : Journal of Nuclear Materials. 179-181, PART 1, p. 353-355 3 p.

Research output: Contribution to journalArticle

Limiters
tokamak devices
heat
Hydrogen
hydrogen plasma
32 Citations (Scopus)

Probe measurements in the REPUTE-1 reversed field pinch

Ji, H., Toyama, H., Yamagishi, K., Shinohara, S., fujisawa, A. & Miyamoto, K., Dec 1 1991, In : Review of Scientific Instruments. 62, 10, p. 2326-2337 12 p.

Research output: Contribution to journalArticle

magnetic probes
probes
plasma pinch
electric fields
Electric field measurement
7 Citations (Scopus)

Pulse high heat flux experiment with laser beams on graphite

Kamezaki, H., Tokunaga, K., Fukuda, S., Yoshida, N. & Muroga, T., Jan 1 1991, In : Journal of Nuclear Materials. 179-181, PART 1, p. 193-196 4 p.

Research output: Contribution to journalArticle

Graphite
Laser beams
Heat flux
heat flux
Laser pulses
46 Citations (Scopus)

The influence of 173 MeV Xe-ion irradiation on the microstructure of YBa2Cu3O7 thin films

Watanabe, H., Kabius, B., Urban, K., Roas, B., Klaumünzer, S. & Saemann-Ischenko, G., Aug 15 1991, In : Physica C: Superconductivity and its Applications. 179, 1-3, p. 75-84 10 p.

Research output: Contribution to journalArticle

Ion bombardment
ion irradiation
Ions
Thin films
dosage
1992
16 Citations (Scopus)

Behavior of impurities in the scrape-off layer under long duration discharges in TRIAM-1M

Yoshida, N., Tokunaga, K., Fujiwara, T., Tawara, K., Muroga, T. & Itoh, S., Dec 1 1992, In : Journal of Nuclear Materials. 196-198, C, p. 415-420 6 p.

Research output: Contribution to journalArticle

Limiters
Impurities
impurities
Plasmas
damage
1 Citation (Scopus)

Cavity formation and growth during pulse high heat loading in nickel implanted with helium or deuterium ions

Muroga, T., Dohi, K., Ishihama, Y., Tokunaga, K. & Yoshida, N., Jan 1 1992, In : Journal of Nuclear Materials. 191-194, PART B, p. 1248-1253 6 p.

Research output: Contribution to journalArticle

Facings
Helium
helium ions
Deuterium
Nickel
1 Citation (Scopus)

Charged particle emission from plasma facing materials by high heat load

Tokunaga, K., Fujiwara, T., Fukuda, S., Muroga, T. & Yoshida, N., Dec 1 1992, In : Journal of Nuclear Materials. 196-198, C, p. 1008-1012 5 p.

Research output: Contribution to journalArticle

particle emission
Charged particles
Thermal load
charged particles
Ions
9 Citations (Scopus)

Development of negative heavy ion sources for plasma potential measurement

Sasao, M., Okabe, Y., fujisawa, A., Fujita, J., Yamaoka, H. & Wada, M., Dec 1 1992, In : Review of Scientific Instruments. 63, 4, p. 2726-2728 3 p.

Research output: Contribution to journalArticle

plasma potentials
Ion sources
Heavy ions
negative ions
ion sources
16 Citations (Scopus)

Fluctuation and edge-current sustainment in a reversed-field pinch

Ji, H., Toyama, H., fujisawa, A., Shinohara, S. & Miyamoto, K., Jan 1 1992, In : Physical Review Letters. 69, 4, p. 616-619 4 p.

Research output: Contribution to journalArticle

plasma pinch
Ohms law
electrons
electric fields