Exhaust of turbulence cloud at the tongue shaped deformation event

• IDA, Katsumi

• Kobayashi, Tatsuya

• TOKUZAWA, Tokihiko

• AKIYAMA, Tsuyoshi

• TANAKA, Hirohiko

• YOSHINUMA, Mikiro

• ITOH, Kimitaka

• LHD, Experiment Group

抄録

0000-0002-0585-4561

Exhaust of turbulence cloud at the tongue-shaped deformation which triggers MHD bursts is observed in the Large Helical Device in the low density plasma with significant contribution of trapped particles injected by perpendicular neutral beam injection. The exhaust of turbulence cloud is characterized by the abrupt large increase of turbulence amplitude in the frequency range of 150–500 kHz measured with Doppler reflectometer at the edge region of the plasma (). The increase of turbulence amplitude is significantly large and is by one order of magnitude. This abrupt increase of turbulence level is transient and disappears within one milli-second (typically  ~600 μs). In contrast, the turbulence level slightly inside the plasma edge () decreases by a factor of 2 after the MHD bursts.

収録刊行物

• Nuclear Fusion

  Nuclear Fusion 58 (11), 112008-, 2018-10-03

  IOP Publishing

キーワード

• turbulence
• MHD burste
• tongue

詳細情報

• CRID: 1050851707414733184
• NII論文ID: 120007116728
• NII書誌ID: AA12472385
• ISSN: 17414326
• HANDLE: 10655/00012547
• Web Site: https://nifs-repository.repo.nii.ac.jp/records/10564
• 本文言語コード: en
• 資料種別: journal article
• データソース種別:
  • IRDB
  • CiNii Articles