Analysis of Sawtooth Relaxations by Soft X-Ray Tomography on TPE-2M Reversed Field Pinch

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概要

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• The sawtooth relaxation process of a reversed field pinch plasma was investigated by using the soft X-ray tomography technique on the TPE-2M device which is equipped with a thick conducting shell. Reconstructed two-dimensional images of the X-ray emissivity have revealed that an m=1 global kink instability deforms an initially circular hot center to a crescent shape with radial invasion of a cold region, resulting in a sawtooth collapse in a low pinch-parameter regime. This feature is similar to "the driven type relaxation" rather than "the Kadomtsev type relaxation" m terms of topology, while the latter is more likely in terms of time scales. Behavior of soft X-ray fluctuations in a higher pinch-parameter operation is also described.

• 社団法人プラズマ・核融合学会の論文
• 1996-10-25

著者

• Hayase Kiyoshi

  Electrotechnical Laboratory

• Hattori K

  Tohoku Univ. Sendai Jpn

• Hayase K

  Electrotechnical Laboratory

• Hattori Ken-Ichi

  Electrotechnical Laboratory

• Irie Masaru

  School of Science and Engineering, Waseda Universitu

• Irie Masaru

  School Of Science And Engineering Waseda University

• UMEMOTO Tatsuo

  School of Science and Engineering, waseda University

• SATO Yasuhiro

  Electrotechnical Laboratory

• Umemoto Tatsuo

  School Of Science And Engineering Waseda University

• Sato Y

  National Inst. Of Advanced Industrial Sci. And Technol. Tsukuba Jpn

• 梅本 達夫

  School of Science and Engineering, waseda University

• 服部 健一

  Electrotechnical Laboratory

• 佐藤 康広

  Electrotechnical Laboratory

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