Measurement of Spatiotemporal Behavior of Alfvén-Ion-Cyclotron Waves in the GAMMA10 Tandem Mirror

• IKEZOE Ryuya

  Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan

• ICHIMURA Makoto

  Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan

• SATO Tatsunori

  Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan

• IMAI Yasutaka

  Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan

• MURAKAMI Tatsuya

  Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan

• IWAI Toru

  Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan

• UGAJIN Yumeto

  Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan

• YOKOYAMA Takuro

  Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan

• SHIMA Yoriko

  Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan

• YOSHIKAWA Masayuki

  Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan

• IMAI Tsuyoshi

  Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan

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.

Journal

• Plasma and Fusion Research

  Plasma and Fusion Research 6 2402047-2402047, 2011

  The Japan Society of Plasma Science and Nuclear Fusion Research

Keywords

• Alfvén-ion-cyclotron
• electromagnetic wave
• temperature anisotropy
• reflectometer
• mirror field
• GAMMA10

Details

• CRID: 1390282680230057472
• NII Article ID: 130002059531
• DOI: 10.1585/pfr.6.2402047
• ISSN: 18806821
• Web Site: http://www.jstage.jst.go.jp/article/pfr/6/0/6_0_2402047/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed