Measurement of spatiotemporal behavior of Alfvén-ion-cyclotron waves in the GAMMA10 tandem mirror

Ryuya Ikezoe, Makoto Ichimura, Tatsunori Sato, Yasutaka Imai, Tatsuya Murakami, Toru Iwai, Yumeto Ugajin, Takuro Yokoyama, Yoriko Shima, Masayuki Yoshikawa, Tsuyoshi Imai

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Abstract

Spatiotemporal behavior of Alfvén-ion-cyclotron (AIC) waves excited in GAMMA10 is investigated using a microwave reflectometer and magnetic probes located at the edge. The frequency spectrum of the AIC waves has several discrete peaks. Simultaneous measurement of the internal density fluctuation and edge magnetic fluctuation of AIC waves shows that AIC waves have different radial structures in the initial excitation phase, but in the later steady state, each of them has the same structure in the radial direction. The results indicate that several AIC waves are excited as the same eigenmode in the radial direction.

Original languageEnglish
Article number2402047
JournalPlasma and Fusion Research
Volume6
Issue number1 SPECIAL ISSUE
DOIs
Publication statusPublished - Dec 1 2011
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Cite this

Ikezoe, R., Ichimura, M., Sato, T., Imai, Y., Murakami, T., Iwai, T., ... Imai, T. (2011). Measurement of spatiotemporal behavior of Alfvén-ion-cyclotron waves in the GAMMA10 tandem mirror. Plasma and Fusion Research, 6(1 SPECIAL ISSUE), [2402047]. https://doi.org/10.1585/pfr.6.2402047