Institute of Space and Plasma Sciences

Research Output 1970 2019

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40 Citations (Scopus)

3-D force-balanced magnetospheric configurations

Zaharia, S., Cheng, C. Z. & Maezawa, K., 2004 Jan 1, In : Annales Geophysicae. 22, 1, p. 251-265 15 p.

Research output: Contribution to journalArticle

Open Access
pressure distribution
plasma pressure
configurations
magnetic fields
magnetospheres
4 Citations (Scopus)

Absolute calibration of space- and time-resolving flat-field vacuum ultraviolet spectrograph for plasma diagnostics

Okamoto, Y., Yoshikawa, M., Yamaguchi, N., Watabe, C., Tamano, T., Kawamori, E., Ito, T., Watanabe, Y. & Yatsu, K., 2000 Dec 1, In : Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers. 39, 6 A, p. 3609-3613 5 p.

Research output: Contribution to journalArticle

Ultraviolet spectrographs
ultraviolet spectrometers
Plasma diagnostics
plasma diagnostics
Calibration
5 Citations (Scopus)

Absolute calibration of space- and time-resolving flat-field vacuum ultraviolet spectrograph under both P and S polarized light conditions for plasma diagnostics

Okamoto, Y., Yoshikawa, M., Yamaguchi, N., Watabe, C., Tamano, T., Kawamori, E., Watanabe, Y., Furukawa, T., Kubota, Y., Sedo, K. & Yatsu, K., 2001 Dec 1, In : Review of Scientific Instruments. 72, 12, p. 4366-4371 6 p.

Research output: Contribution to journalArticle

Ultraviolet spectrographs
ultraviolet spectrometers
Plasma diagnostics
plasma diagnostics
Light polarization
10 Citations (Scopus)

Absolute calibration of space-resolving soft X-ray spectrograph for plasma diagnostics

Yoshikawa, M., Okamoto, Y., Kawamori, E., Watanabe, Y., Watabe, C., Yamaguchi, N. & Tamano, T., 2001 Jan 1, In : Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 467-468, PART II, p. 1533-1536 4 p.

Research output: Contribution to journalArticle

X ray spectrographs
Plasma diagnostics
Spectrographs
plasma diagnostics
spectrographs
13 Citations (Scopus)

Absolute optical energy of sprites and its relationship to charge moment of parent lightning discharge based on measurement by ISUAL/AP

Takahashi, Y., Yoshida, A., Sato, M., Adachi, T., Kondo, S., Hsu, R-R., Su, H-T., Chen, B-C., Mende, S. B., Frey, H. U. & Lee, L. C., 2010 Jan 1, In : Journal of Geophysical Research: Space Physics. 115, 9, A00E55.

Research output: Contribution to journalArticle

photometers
lightning
sprite
Photometers
photometer
38 Citations (Scopus)

Acceleration of heavy ions on auroral field lines

Ashour‐Abdalla, M., Okuda, H. & Cheng, C-Z., 1981 Jan 1, In : Geophysical Research Letters. 8, 7, p. 795-798 4 p.

Research output: Contribution to journalArticle

heavy ions
cyclotrons
ion
oxygen
hydrogen
1 Citation (Scopus)

A comparative study on the lightning sferics associated with terrestrial gamma-ray flashes observed in Americas and Asia

Lu, G., Zhang, H., Cummer, S. A., Wang, Y., Lyu, F., Briggs, M., Xiong, S. & Chen, B-C., 2019 Feb 1, In : Journal of Atmospheric and Solar-Terrestrial Physics. 183, p. 67-75 9 p.

Research output: Contribution to journalArticle

thunderstorms
lightning
thunderstorm
flash
comparative study
16 Citations (Scopus)

A critical study on the reliability of electron temperature measurements with a langmuir probe

Hirao, K. & Oyama, K., 1972 Jan 1, In : Journal of geomagnetism and geoelectricity. 24, 4, p. 415-427 13 p.

Research output: Contribution to journalArticle

Open Access
electrostatic probes
temperature measurement
probe
electron energy
electron
4 Citations (Scopus)

Activity overview of DYANA campaign in japan

Oyama, K. I., Yamanaka, M. D., Kanzawa, H. & Nakane, H., 1992 Jan 1, In : Journal of geomagnetism and geoelectricity. 44, 11, p. 987-993 7 p.

Research output: Contribution to journalArticle

Open Access
wind direction
ionosphere
Japan
wind velocity
turbulence
8 Citations (Scopus)

A fast-propagating, large-scale atmospheric gravity wave observed in the WAVE2004 campaign

Kubota, M., Kawamura, S., Abo, M., Koizumi, Y., Murayama, Y., Yamamori, M., Shiokawa, K., Otsuka, Y., Uchiumi, M., Igarashi, K., Abe, T., Koichiro, O. & Iwagami, N., 2006 Nov 16, In : Journal of Geophysical Research Atmospheres. 111, 21, D21110.

Research output: Contribution to journalArticle

Open Access
atmospheric wave
Gravity waves
gravity waves
gravity
gravity wave
7 Citations (Scopus)

A finite element mesh in a tokamak edge geometry

Nishimura, Y. & Lin, Z., 2006 Oct 10, In : Contributions to Plasma Physics. 46, 7-9, p. 551-556 6 p.

Research output: Contribution to journalArticle

mesh
geometry
simulation
25 Citations (Scopus)

A finite element Poisson solver for gyrokinetic particle simulations in a global field aligned mesh

Nishimura, Y., Lin, Z., Lewandowski, J. L. V. & Ethier, S., 2006 May 20, In : Journal of Computational Physics. 214, 2, p. 657-671 15 p.

Research output: Contribution to journalArticle

mesh
Electrons
Poisson equation
ion temperature
Thermal gradients
6 Citations (Scopus)

A global statistical study on the origin of small-scale ozone vertical structures in the lower stratosphere

Noguchi, K., Imamura, T., Oyama, K. I. & Bodeker, G. E., 2006 Dec 16, In : Journal of Geophysical Research Atmospheres. 111, 23, D23105.

Research output: Contribution to journalArticle

Upper atmosphere
Ozone
Advection
stratosphere
advection
1 Citation (Scopus)
sprite
airglow
lightning
tropical regions
equatorial regions

Akebono observations of the polar wind and suprathermal auroral ions: An overview

Yau, A. W., Abe, T., Greffen, M. J., Horita, R. E., Nudsen, D. J. K., Mukai, T., Oyama, K. I., Peterson, W. K., Sagawa, E., Watanabe, S. & Whalen, B. A., 1996 Jan 1, In : Journal of geomagnetism and geoelectricity. 48, 1, p. 45-56 12 p.

Research output: Contribution to journalArticle

Open Access
ion
ions
high altitude
electron
electron energy

Akebono observations of the polar wind and suprathermal auroral ions: An overview

Yau, A. W., Abe, T., Greffen, M. J., Horita, R. E., Knudsen, D. J., Mukai, T., Koichiro, O., Peterson, W. K., Sagawa, E., Watanabe, S. & Whalen, B. A., 1996 Jan 1, In : Earth, Planets and Space. 48, 1, p. 45-56 12 p.

Research output: Contribution to journalArticle

ion
ions
high altitude
electron
electron energy
52 Citations (Scopus)

A kinetic-fluid model

Cheng, C. Z. & Johnson, J. R., 1999 Jan 1, In : Journal of Geophysical Research: Space Physics. 104, A1, p. 413-427 15 p., 1998JA900065.

Research output: Contribution to journalArticle

Ions
ions
kinetics
Kinetics
Fluids
63 Citations (Scopus)

Alfven cyclotron instability and ion cyclotron emission

Gorelenkov, N. N. & Cheng, C. Z., 1995 Dec 1, In : Nuclear Fusion. 35, 12, p. 1743-1752 10 p., I39.

Research output: Contribution to journalArticle

cyclotrons
deuterium
ions
fusion
tritium
108 Citations (Scopus)

Alfvén eigenmode and energetic particle research in JT-60U

Kimura, H., Kusama, Y., Saigusa, M., Kramer, G. J., Tobita, K., Nemoto, M., Kondoh, T., Nishitani, T., Da Costa, O., Ozeki, T., Oikawa, T., Moriyama, S., Morioka, A., Fu, G. Y., Cheng, C-Z. & Afanas'ev, V. I., 1998 Dec 1, In : Nuclear Fusion. 38, 9, p. 1303-1314 12 p.

Research output: Contribution to journalArticle

energetic particles
shear
ions
scintillating fibers
gradients
75 Citations (Scopus)

Alfvén eigenmodes driven by Alfvénic beam ions in JT-60U

Shinohara, K., Kusama, Y., Takechi, M., Morioka, A., Ishikawa, M., Oyama, N., Tobita, K., Ozeki, T., Takeji, S., Moriyama, S., Fujita, T., Oikawa, T., Suzuki, T., Nishitani, T., Kondoh, T., Lee, S., Kuriyama, M., Kramer, G. J., Gorelenkov, N. N., Nazikian, R. & 3 others, Cheng, C-Z., Fu, G. Y. & Fukuyama, A., 2001 May 1, In : Nuclear Fusion. 41, 5, p. 603-612 10 p.

Research output: Contribution to journalArticle

ion beams
ions
neutron emission
beam injection
neutral particles
30 Citations (Scopus)

Alfv́n eigenmodes in reversed shear plasmas in JT-60U negative-ion-based neutral beam injection discharges

Takechi, M., Fukuyama, A., Ishikawa, M., Cheng, C. Z., Shinohara, K., Ozeki, T., Kusama, Y., Takeji, S., Fujita, T., Oikawa, T., Suzuki, T., Oyama, N., Morioka, A., Gorelenkov, N. N., Kramer, G. J. & Nazikian, R., 2005 Aug 1, In : Physics of Plasmas. 12, 8, p. 1-7 7 p., 082509.

Research output: Contribution to journalArticle

beam injection
neutral beams
negative ions
shear
safety factors
16 Citations (Scopus)

Alpha-driven magnetohydrodynamics (MHD) and MHD-induced alpha loss in the Tokamak Fusion Test Reactor

TFTR Group, 1997 May, In : Physics of Plasmas. 4, 5, p. 1610-1616 7 p.

Research output: Contribution to journalArticle

magnetohydrodynamics
fusion
reactors
ballooning modes
safety factors
51 Citations (Scopus)

Alpha particle destabilization of the toroidicity-induced Alfvén eigenmodes

Cheng, C-Z., 1991 Jan 1, In : Physics of Fluids B. 3, 9, p. 2463-2471 9 p.

Research output: Contribution to journalArticle

Experimental reactors
Alpha particles
destabilization
Nuclear energy
alpha particles
100 Citations (Scopus)

Alpha-Particle-Driven Toroidal Alfvén Eigenmodes in the Tokamak Fusion Test Reactor

Nazikian, R., Fu, G. Y., Bell, M. G., Bell, R. E., Budny, R. V., Bush, C. E., Chang, Z., Chen, Y., Cheng, C. Z., Darrow, D. S., Efthimion, P. C., Fredrickson, E. D., Leblanc, B., Majeski, R., Mazzucato, E., Medley, S. S., Park, H. K., Holthaus, M., Strachan, J. D., Synakowski, E. J. & 5 others, Taylor, G., Von Goeler, S., White, R. B., Wong, K. L. & Zweben, S. J., 1997 Apr 14, In : Physical review letters. 78, 15, p. 2976-2979 4 p.

Research output: Contribution to journalArticle

alpha particles
fusion
reactors
safety factors
beam injection
13 Citations (Scopus)

Alpha-particle effects on low-n magnetohydrodynamic modes

Cheng, C-Z., 1990 Jan 1, In : Fusion Technology. 18, 3, p. 443-454 12 p.

Research output: Contribution to journalArticle

Alpha particles
Magnetohydrodynamics
magnetohydrodynamics
alpha particles
Landau damping
23 Citations (Scopus)

Alpha particle effects on the internal kink and fishbone modes

Wu, Y., Cheng, C-Z. & White, R. B., 1994 Jan 1, In : Physics of Plasmas. 1, 10, p. 3369-3377 9 p.

Research output: Contribution to journalArticle

alpha particles
magnetohydrodynamics
Larmor radius
trapped particles
pitch (inclination)
22 Citations (Scopus)

Alpha particle losses from Tokamak Fusion Test Reactor deuterium–tritium plasmas

Darrow, D. S., Zweben, S. J., Batha, S., Budny, R. V., Bush, C. E., Chang, Z., Cheng, C. Z., Duong, H. H., Fang, J., Fisch, N. J., Fischer, R., Fredrickson, E. D., fu, G. Y., Heeter, R. F., Heidbrink, W. W., Herrmann, H. W., Herrmann, M. C., Hill, K., Jaeger, E. F., James, R. & 14 others, Majeski, R., Medley, S. S., Murakami, M., Petrov, M., Phillips, C. K., Redi, M. H., Ruskov, E., Spong, D. A., Strait, E. J., Taylor, G., White, R. B., Wilson, J. R., Wong, K. L. & Zarnstorff, M. C., 1996 May, In : Physics of Plasmas. 3, 5, p. 1875-1880 6 p.

Research output: Contribution to journalArticle

alpha particles
fusion
reactors
ions
ripples
102 Citations (Scopus)

Alpha-particle losses from toroidicity-induced Alfvén eigenmodes. Part II: Monte Carlo simulations and anomalous alpha-loss processes

Sigmar, D. J., Hsu, C. T., White, R. & Cheng, C. Z., 1992 Jan 1, In : Physics of Fluids B. 4, 6, p. 1506-1516 11 p.

Research output: Contribution to journalArticle

Alpha particles
alpha particles
Orbits
orbits
simulation
16 Citations (Scopus)

Alpha-particle physics in the tokamak fusion test reactor DT experiment

Zweben, S. J., Arunasalam, V., Batha, S. H., Budny, R. V., Bush, C. E., Cauffman, S., Chang, C. S., Chang, Z., Cheng, C. Z., Darrow, D. S., Dendy, R. O., Duong, H. H., Fisch, N. J., Fredrickson, E. D., Fisher, R. K., Fonck, R. J., Fu, G. Y., Goloborod'ko, V., Gorelenkov, N., Hawryluk, R. J. & 26 others, Heeter, R., Heidbrink, W. W., Hermann, H. W., Hermann, M., Johnson, D. W., Machuzak, J., Majeski, R., McGuire, K. M., McKee, G., Medley, S. S., Mynick, H. E., Nazikian, R., Petrov, M. P., Redi, M. H., Reznik, S., Rogers, J., Schilling, G., Spong, D. A., Strachan, J. D., Stratton, B. C., Synakowski, E., Taylor, G., Wang, S., White, R. B., Wong, K. L. & Yavorski, V., 1997 Jan 1, In : Plasma Physics and Controlled Fusion. 39, 5A, p. A275-A283

Research output: Contribution to journalArticle

Alpha particles
High energy physics
alpha particles
Fusion reactions
fusion
5 Citations (Scopus)

Alpha particles in fusion research

Sigmar, D. J., Cheng, C. Z., Sadler, G. J. & Zweben, S. J., 1995 Dec 1, In : Nuclear Fusion. 35, 12, p. 1421-1428 8 p., 401.

Research output: Contribution to journalArticle

plasma physics
alpha particles
fusion

Alpha particle transport in the presence of ballooning type electrostatic driftwaves

Nishimura, Y., Huang, B. & Cheng, C. Z., 2015 Jul 1, In : Nuclear Fusion. 55, 7, 073016.

Research output: Contribution to journalArticle

alpha particles
turbulence
electrostatics
trapped particles
coordinate transformations
17 Citations (Scopus)

Alternate transport

Boozer, A. H., Baldwin, D. E., Horton, W. C., Dominguez, R. R., Glasser, A. H., Krommes, J. A., Neilson, G. H., Shaing, K-C., Sadowski, W. L. & Weitzner, H., 1990 Jan 1, In : Physics of Fluids B. 2, 12, p. 2870-2878 9 p.

Research output: Contribution to journalArticle

Experiments
45 Citations (Scopus)

Altitude profile of the polar wind velocity and its relationship to ionospheric conditions

Abe, T., Whalen, B. A., Yau, A. W., Watanabe, S., Sagawa, E. & Oyama, K. I., 1993 Jan 1, In : Geophysical Research Letters. 20, 24, p. 2825-2828 4 p.

Research output: Contribution to journalArticle

wind velocity
ionospherics
profiles
electron energy
electron
4 Citations (Scopus)

A measurement of the N2 number density and the N2 vibrational rotational temperature in the lower thermosphere - Instrumentation and preliminary results

Kawashima, T., Koichiro, O., Suzuki, K., Iwagami, N. & Teii, S., 1997 Jan 1, In : Advances in Space Research. 19, 4, p. 663-666 4 p.

Research output: Contribution to journalArticle

thermosphere
instrumentation
Nitrogen
Sounding rockets
nitrogen
32 Citations (Scopus)

A modelling study of the longitudinal variations in the north-south asymmetries of the ionospheric equatorial anomaly

Su, Y. Z., Bailey, G. J., Koichiro, O. & Balan, N., 1997 Jan 1, In : Journal of Atmospheric and Solar-Terrestrial Physics. 59, 11, p. 1299-1310 12 p.

Research output: Contribution to journalArticle

ionospherics
asymmetry
anomalies
anomaly
magnetic declination
36 Citations (Scopus)

A model of solar flares and their homologous behavior

Choe, G. S. & Cheng, C-Z., 2000 Sep 20, In : Astrophysical Journal. 541, 1 PART 1, p. 449-467 19 p.

Research output: Contribution to journalArticle

solar flares
magnetic islands
shear
current sheets
flares
4 Citations (Scopus)

A model of solar flares based on arcade field reconnection and merging of magnetic islands

Choe, G. S. & Cheng, C-Z., 2002 May 1, In : Physics of Plasmas. 9, 5, p. 2330-2336 7 p.

Research output: Contribution to journalArticle

magnetic islands
solar flares
flares
magnetohydrodynamic simulation
solar corona
66 Citations (Scopus)

Analysis of alpha particle-driven toroidal Alfvén eigenmodes in Tokamak Fusion Test Reactor deuterium-tritium experiments

Fu, G. Y., Cheng, C-Z., Budny, R., Chang, Z., Darrow, D. S., Fredrickson, E., Mazzucato, E., Nazikian, R., Wong, K. L. & Zweben, S., 1996 Jan 1, In : Physics of Plasmas. 3, 11, p. 4036-4045 10 p.

Research output: Contribution to journalArticle

tritium
alpha particles
deuterium
fusion
reactors
5 Citations (Scopus)

Analysis of ionospheric electron parameters versus geomagnetic index Dst from RO data of FORMOSAT-3/COSMIC

Wang, K. & Tam, S. W-Y., 2009 Jan 1, In : GPS Solutions. 14, 1, p. 99-108 10 p.

Research output: Contribution to journalArticle

COSMIC
electron density
electron
ionosphere
GPS
4 Citations (Scopus)

Analysis of lightning strokes associated with sprites observed by ISUAL in the vicinity of North America

Lu, G., Cummer, S. A., Chen, A. B., Lyu, F., Li, D., Liu, F., Hsu, R. R. & Su, H. T., 2017 Aug, In : Terrestrial, Atmospheric and Oceanic Sciences. 28, 4

Research output: Contribution to journalArticle

sprite
lightning
thunderstorm
North America
analysis
18 Citations (Scopus)

Analysis of neoclassical transport in the banana regime with the DKES code for the Large Helical Device

Ogawa, Y., Amano, T., Nakajima, N., Ohyabu, N., Yamazaki, K., Hirshman, S. P., Van Rij, W. I. & Shaing, K. C., 1992 Dec 1, In : Nuclear Fusion. 32, 1, p. 119-132 14 p., I10.

Research output: Contribution to journalArticle

kinetic equations
diffusion coefficient
ion temperature
configurations
electric potential
11 Citations (Scopus)

Analytical determination of power-law index for the Chapman et al. Sandpile (FSOC) analog for magnetospheric activity - a renormalization-group analysis

Tam, S. W. Y., Chang, T., Chapman, S. C. & Watkins, N. W., 2000 May 1, In : Geophysical Research Letters. 27, 9, p. 1367-1370 4 p.

Research output: Contribution to journalArticle

avalanche
avalanches
power law
analogs
power law distribution
16 Citations (Scopus)

Analytical representation of the plasmasphere electron temperature distribution based on Akebono data

Kutiev, I., Oyama, K. & Abe, T., 2002 Dec, In : Journal of Geophysical Research: Space Physics. 107, A12, 1459.

Research output: Contribution to journalArticle

plasmasphere
Electron temperature
Temperature distribution
temperature distribution
electrons
85 Citations (Scopus)

An approximate analytic expression for neoclassical toroidal plasma viscosity in tokamaks

Shaing, K. C., Sabbagh, S. A. & Chu, M. S., 2010 Feb 15, In : Nuclear Fusion. 50, 2, 025022.

Research output: Contribution to journalArticle

toroidal plasmas
viscosity
plasma control
electric fields
kinetic equations
36 Citations (Scopus)

An approximate analytic expression for plasma viscosity in finite aspect ratio tokamaks and its applications

Shaing, K-C., Yokoyama, M., Wakatani, M. & Hsu, C. T., 1996 Jan 1, In : Physics of Plasmas. 3, 3, p. 965-970 6 p.

Research output: Contribution to journalArticle

aspect ratio
viscosity
coefficients
kinetic equations
coefficient of friction
11 Citations (Scopus)

An empirical model of electron density in low latitude at 600 km obtained by Hinotori satellite

Kakinami, Y., Watanabe, S. & Koichiro, O., 2008 Jan 1, In : Advances in Space Research. 41, 9, p. 1495-1499 5 p.

Research output: Contribution to journalArticle

tropical regions
electron density
Carrier concentration
Satellites
interpolation
17 Citations (Scopus)

An estimate of the ion orbit loss rate in tokamaks

Shaing, K-C., 1992 Jan 1, In : Physics of Fluids B. 4, 10, p. 3310-3315 6 p.

Research output: Contribution to journalArticle

Orbits
Ions
orbits
estimates
ions
11 Citations (Scopus)

An extreme ultraviolet radiation source for the simulation of the ionosphere

Oyama, K. I., Suzuki, K., Kawashima, N., Zalpuri, K. S., Teii, S. & Nakamura, Y., 1991 Dec 1, In : Review of Scientific Instruments. 62, 7, p. 1721-1726 6 p.

Research output: Contribution to journalArticle

extreme ultraviolet radiation
Ionosphere
radiation sources
Ultraviolet radiation
ionospheres
38 Citations (Scopus)

An improved type of electron temperature probe

Hirao, K. & Oyama, K. I., 1970 Jan 1, In : Journal of geomagnetism and geoelectricity. 22, 4, p. 393-402 10 p.

Research output: Contribution to journalArticle

Open Access
temperature probes
probe
electron energy
electron
temperature
2 Citations (Scopus)

Anisotropic electron energy distribution in the topside ionospheric F-region

Watanabe, S., Oyama, K. I. & Abe, T., 1989 Oct, In : Planetary and Space Science. 37, 10, p. 1207-1214 8 p.

Research output: Contribution to journalArticle

F region
ionospherics
energy distribution
electron energy
electron