Observations of abrupt changes in the fluctuation spectrum on LMD-U

H. Arakawa, K. Kamataki, S. Inagaki, T. Maruta, Y. Nagashima, T. Yamada, S. Shinohara, K. Terasaka, S. Sugita, M. Yagi, N. Kasuya, A. Fujisawa, S. I. Itoh, K. Itoh

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

A transition of the fluctuation spectrum of ion saturation current is observed in linear magnetized plasmas. A power spectrum with regular peaks and a broadband spectrum appear alternately during a discharge. The temporal order of changes in the modes is investigated at the transition. The low poloidal mode number components change before the higher modes begin to change. The delay times of change between modes are determined.

Original languageEnglish
Article number085001
JournalPlasma Physics and Controlled Fusion
Volume51
Issue number8
DOIs
Publication statusPublished - Nov 6 2009

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Power spectrum
Time delay
Plasmas
Ions
power spectra
time lag
broadband
saturation
ions

All Science Journal Classification (ASJC) codes

  • Nuclear Energy and Engineering
  • Condensed Matter Physics

Cite this

Observations of abrupt changes in the fluctuation spectrum on LMD-U. / Arakawa, H.; Kamataki, K.; Inagaki, S.; Maruta, T.; Nagashima, Y.; Yamada, T.; Shinohara, S.; Terasaka, K.; Sugita, S.; Yagi, M.; Kasuya, N.; Fujisawa, A.; Itoh, S. I.; Itoh, K.

In: Plasma Physics and Controlled Fusion, Vol. 51, No. 8, 085001, 06.11.2009.

Research output: Contribution to journalArticle

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AU - Kamataki, K.

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AU - Yamada, T.

AU - Shinohara, S.

AU - Terasaka, K.

AU - Sugita, S.

AU - Yagi, M.

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AU - Fujisawa, A.

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