Fast potential change during sawteeth in JIPP T-IIU tokamak plasmas

Y. Hamada; A. Nishizawa; Y. Kawasumi; K. Kawahata; K. Itoh; A. Ejiri; K. Toi; K. Narihara; K. Sato; T. Seki; H. Iguchi; A. Fujisawa; K. Adachi; S. Hidekuma; S. Hirokura

doi:10.1088/0029-5515/36/4/I11

Fast potential change during sawteeth in JIPP T-IIU tokamak plasmas

Y. Hamada, A. Nishizawa, Y. Kawasumi, K. Kawahata, K. Itoh, A. Ejiri, K. Toi, K. Narihara, K. Sato, T. Seki, H. Iguchi, A. Fujisawa, K. Adachi, S. Hidekuma, S. Hirokura

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

Abstract

Fast changes of electric potential with different polarities are observed during sawtooth oscillations in the core region of a tokamak plasma using a heavy ion beam probe. Near the inversion radius the polarity of the observed change of the potential is found to be dependent on the swift movement of the hot core at the crash and is consistent with the prediction of one-fluid MHD theory. Near the magnetic axis the change of the potentials is positive and outside the inversion radius the change is negative. This is in contradiction with the MHD prediction.

Original language	English
Pages (from-to)	515-520
Number of pages	6
Journal	Nuclear Fusion
Volume	36
Issue number	4
DOIs	https://doi.org/10.1088/0029-5515/36/4/I11
Publication status	Published - Apr 1 1996
Externally published	Yes

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Condensed Matter Physics

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10.1088/0029-5515/36/4/I11

Cite this

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title = "Fast potential change during sawteeth in JIPP T-IIU tokamak plasmas",

abstract = "Fast changes of electric potential with different polarities are observed during sawtooth oscillations in the core region of a tokamak plasma using a heavy ion beam probe. Near the inversion radius the polarity of the observed change of the potential is found to be dependent on the swift movement of the hot core at the crash and is consistent with the prediction of one-fluid MHD theory. Near the magnetic axis the change of the potentials is positive and outside the inversion radius the change is negative. This is in contradiction with the MHD prediction.",

author = "Y. Hamada and A. Nishizawa and Y. Kawasumi and K. Kawahata and K. Itoh and A. Ejiri and K. Toi and K. Narihara and K. Sato and T. Seki and H. Iguchi and A. Fujisawa and K. Adachi and S. Hidekuma and S. Hirokura",

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doi = "10.1088/0029-5515/36/4/I11",

language = "English",

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pages = "515--520",

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TY - JOUR

T1 - Fast potential change during sawteeth in JIPP T-IIU tokamak plasmas

AU - Hamada, Y.

AU - Nishizawa, A.

AU - Kawasumi, Y.

AU - Kawahata, K.

AU - Itoh, K.

AU - Ejiri, A.

AU - Toi, K.

AU - Narihara, K.

AU - Sato, K.

AU - Seki, T.

AU - Iguchi, H.

AU - Fujisawa, A.

AU - Adachi, K.

AU - Hidekuma, S.

AU - Hirokura, S.

PY - 1996/4/1

Y1 - 1996/4/1

N2 - Fast changes of electric potential with different polarities are observed during sawtooth oscillations in the core region of a tokamak plasma using a heavy ion beam probe. Near the inversion radius the polarity of the observed change of the potential is found to be dependent on the swift movement of the hot core at the crash and is consistent with the prediction of one-fluid MHD theory. Near the magnetic axis the change of the potentials is positive and outside the inversion radius the change is negative. This is in contradiction with the MHD prediction.

AB - Fast changes of electric potential with different polarities are observed during sawtooth oscillations in the core region of a tokamak plasma using a heavy ion beam probe. Near the inversion radius the polarity of the observed change of the potential is found to be dependent on the swift movement of the hot core at the crash and is consistent with the prediction of one-fluid MHD theory. Near the magnetic axis the change of the potentials is positive and outside the inversion radius the change is negative. This is in contradiction with the MHD prediction.

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DO - 10.1088/0029-5515/36/4/I11

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VL - 36

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EP - 520

JO - Nuclear Fusion

JF - Nuclear Fusion

IS - 4

ER -

Fast potential change during sawteeth in JIPP T-IIU tokamak plasmas

Abstract

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