Institute of Space and Plasma Sciences

Research Output 1970 2019

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2001
30 Citations (Scopus)

Magnetic safety factor profile before and after sawtooth crashes investigated with toroidicity and ellipticity induced Alfvén eigenmodes

Kramer, G. J., Cheng, C-Z., Kusama, Y., Nazikian, R., Takeji, S. & Tobita, K., 2001 Sep 1, In : Nuclear Fusion. 41, 9, p. 1135-1151 17 p.

Research output: Contribution to journalArticle

crashes
safety factors
ellipticity
profiles
cyclotrons
65 Citations (Scopus)

Observation of compressional Alfvén modes during neutral-beam heating on the National Spherical Torus Experiment

Fredrickson, E. D., Gorelenkov, N., Cheng, C. Z., Bell, R., Darrow, D., Johnson, D., Kaye, S., LeBlanc, B., Menard, J., Kubota, S. & Peebles, W., 2001 Oct 1, In : Physical review letters. 87, 14, p. 145001/1-145001/4 145001.

Research output: Contribution to journalArticle

neutral beams
heating
beam injection
cyclotron frequency
magnetohydrodynamic waves
1 Citation (Scopus)

Region of validity for potato-plateau transport fluxes

Shaing, K-C., 2001 Jul 1, In : Physics of Plasmas. 8, 7, p. 3517-3518 2 p.

Research output: Contribution to journalArticle

potatoes
plateaus
kinetic equations
20 Citations (Scopus)

Resonance frequency of stretched magnetic field lines based on a self-consistent equilibrium magnetosphere model

Lui, A. T. Y. & Cheng, C. Z., 2001 Nov 1, In : Journal of Geophysical Research: Space Physics. 106, A11, p. 25793-25802 10 p., 2001JA000113.

Research output: Contribution to journalArticle

Magnetosphere
magnetic fields
resonance lines
magnetospheres
magnetosphere
61 Citations (Scopus)

Signatures of mode conversion and kinetic Alfvén waves at the magnetopause

Johnson, J. R., Cheng, C. Z. & Song, P., 2001 Jan 15, In : Geophysical Research Letters. 28, 2, p. 227-230 4 p.

Research output: Contribution to journalArticle

Open Access
magnetopause
signatures
kinetics
magnetic field
amplification
4 Citations (Scopus)

Solar flare mechanism based on magnetic arcade reconnection and island merging

Cheng, C-Z. & Choe, G. S., 2001 Jan 1, In : Earth, Planets and Space. 53, 6, p. 597-604 8 p.

Research output: Contribution to journalArticle

Open Access
solar flares
current sheets
magnetic islands
flares
shear

Squeezed potato orbits in a magnetic well

Shaing, K-C., 2001 Sep 1, In : Physics of Plasmas. 8, 9, p. 3855-3856 2 p.

Research output: Contribution to journalArticle

potatoes
orbits
particle energy
compressing
energy
101 Citations (Scopus)

Stochastic ion heating at the magnetopause due to kinetic Alfvén waves

Johnson, J. R. & Cheng, C-Z., 2001 Dec 1, In : Geophysical Research Letters. 28, 23, p. 4421-4424 4 p.

Research output: Contribution to journalArticle

Open Access
magnetopause
transverse waves
heating
kinetics
ion
1 Citation (Scopus)

Studies of impurity ion spectrum in the GAMMA 10 plasma by using VUV spectrograph

Okamoto, Y., Yoshikawa, M., Yamaguchi, N., Watabe, C., Kawamori, E., Watanabe, Y., Furukawa, T., Tamano, T. & Yatsu, K., 2001 Jan, In : Fusion Technology. 39, 1 T, p. 293-296 4 p.

Research output: Contribution to journalArticle

Ultraviolet spectrographs
ultraviolet spectrometers
Vacuum
Impurities
Ions

Study of pellet-plasma interaction in the GAMMA 10 tandem mirror

Kawamori, E., Tamano, T., Nakashima, Y., Yoshikawa, M., Kobayashi, S., Watanabe, Y., Aminaka, H., Cho, T., Ishii, K., Mase, A. & Yatsu, K., 2001 Jan, In : Fusion Technology. 39, 1 T, p. 257-260 4 p.

Research output: Contribution to journalArticle

Plasma interactions
tandem mirrors
plasma interactions
pellets
Mirrors
62 Citations (Scopus)

Symmetry-breaking induced transport in the vicinity of a magnetic island

Shaing, K-C., 2001 Dec 10, In : Physical Review Letters. 87, 24, p. 2450031-2450034 4 p., 245003.

Research output: Contribution to journalArticle

magnetic islands
field strength
broken symmetry
symmetry
magnetic fields
12 Citations (Scopus)

Symmetry-breaking induced transport in the vicinity of a magnetic island

Shaing, K-C., 2001 Jan 1, In : Physical review letters. 87, 24, p. 245003-1-245003-4

Research output: Contribution to journalArticle

magnetic islands
field strength
broken symmetry
magnetic fields
symmetry
4 Citations (Scopus)

The central nightside Venus ionosphere: Dependence of ion concentration and plasma holes location on solar wind dynamic pressure

Mahajan, K. K. & Koichiro, O., 2001 Jan 1, In : Advances in Space Research. 27, 11, p. 1863-1868 6 p.

Research output: Contribution to journalArticle

wind pressure
Solar wind
dynamic pressure
Ionosphere
Venus (planet)
35 Citations (Scopus)

Theory for toroidal momentum pinch and flow reversal in tokamaks

Shaing, K. C., 2001 Jan 22, In : Physical review letters. 86, 4, p. 640-643 4 p.

Research output: Contribution to journalArticle

momentum
28 Citations (Scopus)

The toroidicity-induced Alfvén eigenmode structure in DIII-D: Implications of soft x-ray and beam-ion loss data

Carolipio, E. M., Heidbrink, W. W., Cheng, C. Z., Chu, M. S., Fu, G. Y., Jaun, A., Spong, D. A., Turnbull, A. D. & White, R. B., 2001 Jul 1, In : Physics of Plasmas. 8, 7, p. 3391-3401 11 p.

Research output: Contribution to journalArticle

ion beams
magnetohydrodynamics
eigenvectors
x rays
predictions
18 Citations (Scopus)

Toroidal momentum confinement in neoclassical quasilinear theory in tokamaks

Shaing, K-C., 2001 Jan 1, In : Physics of Plasmas. 8, 1, p. 193-198 6 p.

Research output: Contribution to journalArticle

momentum
gradients
plasma pressure
electrostatics
temperature
2000
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
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
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
1 Citation (Scopus)
cyclotron resonance
kinetic equations
heating
ions
8 Citations (Scopus)

Fast particle destabilization of toroidicity-induced Alfvén eigenmodes in the National Spherical Torus Experiment

Gorelenkov, N. N., Cheng, C. Z., Fu, G. Y., Kaye, S., White, R. & Gorelenkova, M. V., 2000 May, In : Physics of Plasmas. 7, 5 I, p. 1433-1436 4 p.

Research output: Contribution to journalArticle

destabilization
Larmor radius
fusion
orbits
saturation
43 Citations (Scopus)

Fast particle experiments in JT-60U

Kramer, G. J., Iwase, M., Kusama, Y., Morioka, A., Nemoto, M., Nishitani, T., Shinohara, K., Takeji, S., Tobita, K., Ozeki, T., Cheng, C. Z., Fu, G. Y. & Nazikian, R., 2000 Jul 1, In : Nuclear Fusion. 40, 7, p. 1383-1396 14 p.

Research output: Contribution to journalArticle

beam injection
neutral beams
negative ions
heating
continuums
1 Citation (Scopus)

Global scale earth's upper atmosphere monitoring by SACI-1 micro-satellite

Takahashi, H., Neri, J. A., Abdu, M. A., Muralikrishna, P., Jayanthi, U. B., Trivedi, N. B., Sobral, J. H. A., Okano, S., Shepherd, G., Sargoytchev, S., Koichiro, O. & Russell, C. T., 2000 Jan 1, In : Advances in Space Research. 26, 6, p. 929-937 9 p.

Research output: Contribution to journalArticle

Plasma probes
plasma probes
particle telescopes
polar orbits
Magnetosphere
1 Citation (Scopus)
radio frequencies
kinetic equations
56 Citations (Scopus)

Particle transport and energization associated with substorms

Zaharia, S., Cheng, C. Z. & Johnson, J. R., 2000 Aug 1, In : Journal of Geophysical Research: Space Physics. 105, A8, p. 18741-18752 12 p., 1999JA000407.

Research output: Contribution to journalArticle

Fluxes
energetic particles
flux (rate)
Earth (planet)
Magnetic fields
2 Citations (Scopus)

Plasma diagnostic experiments on board of the Brazilian scientific microsatellite SACI-1

Muralikrishna, P., Abdu, M. A., Sobral, J. H. A. & Koichiro, O., 2000 Jul 22, In : Geofisica Internacional. 39, 1, p. 127-133 7 p.

Research output: Contribution to journalArticle

microsatellites
Plasma diagnostics
plasma diagnostics
ionospherics
Plasmas
7 Citations (Scopus)

Potato, banana, local, and nonlocal transport

Shaing, K. C., 2000 Dec, In : Physics of Plasmas. 7, 12, p. 5081-5086 6 p.

Research output: Contribution to journalArticle

potatoes
transport theory
poloidal flux
orbits
gradients
1 Citation (Scopus)

Rocket observation of sporadic-e layers and electron density irregularities over midlatitude

Mori, H. & Koichiro, O., 2000 Jan 1, In : Advances in Space Research. 26, 8, p. 1251-1255 5 p.

Research output: Contribution to journalArticle

E region
Sounding rockets
Langmuir probes
temperate regions
Rockets
3 Citations (Scopus)

Science and technology of the 10 MA spherical tori

Peng, Y. K. M., Reiersen, W., Kaye, S. M., Jardin, S. C., Menard, J., Gates, D., Robinson, J., Dahlgren, F., Grisham, L. R., Majeski, R., Mikkelsen, D. R., Ono, M., Schmidt, J. A., Wilson, J. R., Woolley, R., Cheng, E. T., Cerbone, R. J., Strickler, D. J., Galambos, J. D., Sviatoslavsky, I. N. & 2 others, Shaing, K. C. & Wang, X., 2000 Jan 1, In : Nuclear Fusion. 40, SPEC. ISS. 3, p. 583-587 5 p.

Research output: Contribution to journalArticle

plasma currents
ramps
neutrons
fluence
energy technology
4 Citations (Scopus)

Spectral energy distribution and abundances of NGC 288 stars

Chen, B-C., Tsay, W. S., Tsai, W. S. & Lu, P. K., 2000 Jan 1, In : Astronomical Journal. 120, 5, p. 2569-2578 10 p.

Research output: Contribution to journalArticle

spectral energy distribution
stars
filter
energy
filters
24 Citations (Scopus)

Stability properties of toroidal Alfven modes driven by fast particles

Gorelenkov, N. N., Bernabei, S., Cheng, C. Z., Hill, K. W., Nazikian, R., Kaye, S., Kusama, Y., Kramer, G. J., Shinohara, K., Ozeki, T. & Gorelenkova, M. V., 2000 Jul 1, In : Nuclear Fusion. 40, 7, p. 1311-1323 13 p.

Research output: Contribution to journalArticle

negative ions
frequency ranges
heating
causes
kinetics
12 Citations (Scopus)

The role of vibrationally excited nitrogen and oxygen in the ionosphere over Millstone Hill during 16-23 March, 1990

Pavlov, A. V. & Oyama, K. I., 2000 Aug, In : Annales Geophysicae. 18, 8, p. 957-966 10 p.

Research output: Contribution to journalArticle

Open Access
daytime
ionospheres
ionosphere
Boltzmann distribution
nitrogen
2 Citations (Scopus)

What is happening near S q focus?

Koichiro, O., Abdu, M. A., Piel, A. & Thiemann, H., 2000 Jan 1, In : Advances in Space Research. 26, 8, p. 1263-1266 4 p.

Research output: Contribution to journalArticle

Electron temperature
winter
E region
electron energy
electron
51 Citations (Scopus)

Yearly variations in the low-latitude topside ionosphere

Bailey, G. J., Su, Y. Z. & Oyama, K. I., 2000 Jul, In : Annales Geophysicae. 18, 7, p. 789-798 10 p.

Research output: Contribution to journalArticle

Open Access
tropical regions
ionospheres
ionosphere
asymmetry
electron density
1999
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
12 Citations (Scopus)

Bifurcation and relaxation of radial electric field in enhanced reversed shear tokamak plasmas

Shaing, K. C., Aydemir, A. Y., Hiwatari, R., Houlberg, W. A., Ogawa, Y. & Zarnstorff, M. C., 1999 Jan 1, In : Physical review letters. 83, 19, p. 3840-3843 4 p.

Research output: Contribution to journalArticle

shear
electric fields
ripples
viscosity
profiles

Calibration of time- and space-resolving vacuum ultraviolet spectrograph for plasma diagnostics in the tandem mirror GAMMA 10

Yoshikawa, M., Ikeda, K., Okamoto, Y., Kawamori, E., Ito, T., Yamaguchi, N., Mase, A., Tamano, T. & Yatsu, K., 1999 Dec 1, In : Japanese Journal of Applied Physics, Part 2: Letters. 38, 4 A, p. 2131-2136 6 p.

Research output: Contribution to journalArticle

Ultraviolet spectrographs
tandem mirrors
ultraviolet spectrometers
Plasma diagnostics
plasma diagnostics

Calibration of time- and space-resolving vacuum ultraviolet spectrograph for plasma diagnostics in the tandem mirror GAMMA 10

Yoshikawa, M., Ikeda, K., Okamoto, Y., Kawamori, E., Ito, T., Yamaguchi, N., Mase, A., Tamano, T. & Yatsu, K., 1999 Dec 1, In : Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers. 38, 4 A, p. 2137-2140 4 p.

Research output: Contribution to journalArticle

Ultraviolet spectrographs
tandem mirrors
ultraviolet spectrometers
Plasma diagnostics
plasma diagnostics
42 Citations (Scopus)

Can ion cyclotron waves propagate to the ground?

Johnson, J. R. & Cheng, C-Z., 1999 Mar 15, In : Geophysical Research Letters. 26, 6, p. 671-674 4 p.

Research output: Contribution to journalArticle

cyclotrons
magnetosphere
ion
magnetospheres
equatorial wave
55 Citations (Scopus)

Characteristics of Alfven eigenmodes, burst modes and chirping modes in the Alfven frequency range driven by negative ion based neutral beam injection in JT-60U

Kusama, Y., Kramer, G. J., Kimura, H., Saigusa, M., Ozeki, T., Tobita, K., Oikawa, T., Shinohara, K., Kondoh, T., Moriyama, M., Tchernychev, F. V., Nemoto, M., Morioka, A., Iwase, M., Isei, N., Fujita, T., Takeji, S., Kuriyama, M., Nazikian, R., Fu, G. Y. & 2 others, Hill, K. W. & Cheng, C. Z., 1999 Dec 1, In : Nuclear Fusion. 39, Special Issu, p. 1837-1843 7 p.

Research output: Contribution to journalArticle

beam injection
neutral beams
negative ions
bursts
frequency ranges
9 Citations (Scopus)

Cooperative wind observation in the upper mesosphere and lower thermosphere with foil chaff technique, the MU radar, and Yamagawa MF radar

Murayama, Y., Igarashi, K., Nishimuta, I., Yamazaki, R., Koichiro, O., Tsuda, T., Nakamura, T., Fukao, S., Widdel, H. U. & Schlegel, K., 1999 Jan 1, In : Earth, Planets and Space. 51, 7-8, p. 719-729 11 p.

Research output: Contribution to journalArticle

Open Access
chaff
mesosphere
thermosphere
radar
foils
5 Citations (Scopus)

Destabilization of ellipticity-induced Alfvén eigenmodes during ICRF heating and stabilization by negative-ion-based neutral beam injection in JT-60U

Kusama, Y., Fu, G. Y., Kramer, G. J., Saigusa, M., Oikawa, T., Ozeki, T., Moriyama, S., Tchernychev, F. V., Nemoto, M., Kondoh, T., Hatae, T., Tobita, K., Kuriyama, M., Cheng, C. Z. & Kimura, H., 1999 Sep 1, In : Plasma Physics and Controlled Fusion. 41, 9, p. 1167-1177 11 p.

Research output: Contribution to journalArticle

beam injection
destabilization
Cyclotrons
neutral beams
ellipticity
10 Citations (Scopus)

Electron temperature probe onboard Japan's Mars orbiter

Koichiro, O., Abe, T., Schlegel, K., Nagy, A., Kim, J. & Marubashi, K., 1999 Jan 1, In : Earth, Planets and Space. 51, 12, p. 1309-1317 9 p.

Research output: Contribution to journalArticle

Open Access
temperature probes
mars
Mars
Japan
probe
74 Citations (Scopus)

Fast particle finite orbit width and Larmor radius effects on low-n toroidicity induced Alfvén eigenmode excitation

Gorelenkov, N. N., Cheng, C-Z. & Fu, G. Y., 1999 Jan 1, In : Physics of Plasmas. 6, 7, p. 2802-2807 6 p.

Research output: Contribution to journalArticle

Larmor radius
orbits
radii
excitation
fusion
22 Citations (Scopus)

Frequency chirping of core-localized toroidicity-induced alfvén eigenmodes and their coupling to global alfvén eigenmodes

Kramer, G. J., Cheng, C-Z., Fu, G. Y., Kusama, Y., Nazikian, R., Ozeki, T. & Tobita, K., 1999 Jan 1, In : Physical review letters. 82, 15, p. 2961-2964 4 p.

Research output: Contribution to journalArticle

coupled modes
cyclotron resonance
heating
profiles
ions
17 Citations (Scopus)

High altitude observations of electron temperature and a possible north-south asymmetry

Denton, M. H., Bailey, G. J., Su, Y. Z., Koichiro, O. & Abe, T., 1999 Jan 1, In : Journal of Atmospheric and Solar-Terrestrial Physics. 61, 10, p. 775-788 14 p.

Research output: Contribution to journalArticle

high altitude
asymmetry
electron energy
electron
EXOS-D satellite
1 Citation (Scopus)

Intrinsically steady state tokamaks

Shaing, K. C., Aydemir, A. Y., Hazeltine, R. D., Houlberg, W. A. & Zarnstorff, M. C., 1999 Dec 1, In : Nuclear Fusion. 39, Special Issu, p. 2103-2105 3 p.

Research output: Contribution to journalArticle

shear
potatoes
seeds
profiles
67 Citations (Scopus)

Kinetic evolution and acceleration of the solar wind

Tam, S. W-Y. & Chang, T., 1999 Oct 15, In : Geophysical Research Letters. 26, 20, p. 3189-3192 4 p.

Research output: Contribution to journalArticle

solar wind
wave-particle interactions
kinetics
Coulomb collisions
protons
4 Citations (Scopus)

Parallel current in anisotropic high-beta extremely low aspect ratio tokamak plasmas

Shaing, K-C., 1999 Jan 1, In : Physics of Plasmas. 6, 10, p. 3906-3909 4 p.

Research output: Contribution to journalArticle

low aspect ratio
plasma pressure
kinetic equations
field strength
gradients
91 Citations (Scopus)

Physics of energetic ions

Jacquinot, J., Putvinski, S., Bosia, G., Fukuyama, A., Hemsworth, R., Konovalov, S., Nagashima, Y., Nevins, W. M., Rasumova, K., Romanelli, F., Tobita, K., Ushigusa, K., Van Dam, J. W., Vdovin, V., Berk, H. L., Borba, D., Breizman, B. N., Budny, R., Candy, J., Cheng, C. Z. & 25 others, Challis, C., Fasoli, A., Fu, G. Y., Heidbrink, W., Nazikian, R., Martin, G., Porcelli, F., Redi, M., Rosenbluth, M. N., Sadler, G., Sharapov, S. E., Spong, D. A., White, R., Zonca, F., Perkins, F. W., Post, D. E., Uckan, N. A., Azumi, M., Campbell, D. J., Ivanov, N., Sauthoff, N. R., Wakatani, M., Nevins, W. M., Shimada, M. & Van Dam, J., 1999 Dec 1, In : Nuclear Fusion. 39, 12, p. 2471-2494 24 p.

Research output: Contribution to journalArticle

alpha particles
physics
energetic particles
ions
reactors