Excitation and propagation of electromagnetic fluctuations with ion-cyclotron range of frequency in magnetic reconnection laboratory experiment

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  • Michiaki Inomoto
    Graduate School of Frontier Sciences, The University of Tokyo 1 , 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
  • Akihiro Kuwahata
    Graduate School of Engineering, The University of Tokyo 2 ,7-3-1 Hongo, Bunkyo, Tokyo 113-8656, Japan
  • Hiroshi Tanabe
    Graduate School of Frontier Sciences, The University of Tokyo 1 , 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan
  • Yasushi Ono
    Graduate School of Frontier Sciences, The University of Tokyo 1 , 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan

Description

<jats:p>Large-amplitude electromagnetic fluctuations of ion-cyclotron-frequency range are detected in a laboratory experiment inside the diffusion region of a magnetic reconnection with a guide field. The fluctuations have properties similar to kinetic Alfvén waves propagating obliquely to the guide field. Temporary enhancement of the reconnection rate is observed during the occurrence of the fluctuations, suggesting a relationship between the modification in the local magnetic structure given by these fluctuations and the intermittent fast magnetic reconnection.</jats:p>

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