研究室紹介

Fundamental Plasma Group

Research Institute for Applied Mechanics

Department of Interdisciplinary Engineering Sciences, Interdisciplinary Graduate school of Engineering Sciences

Department of Interdisciplinary Engineering, School of Engineering

The research group consists of three laboratories, Fusion Plasma Science and Engineering, Non-Equilibrium Plasma Science and Engineering, and Plasma Nonlinear Phenomena Science and Engineering, which are collaborating on experimental studies using basic plasma experimental devices (PANTA/PLATO). Especially, we focus on plasma turbulence. In plasma fusion reactor, the plasma is confined by a magnetic field and turbulence excited by strong plasma pressure tries to expel the plasma. Overcoming this plasma turbulence is an important key to realize a fusion reactor. We have developed methods (multi-color tomography, heavy ion beam probes) to observe the turbulence inside the plasma, which is usually invisible, and are testing them in the PANTA and PLATO. By using these observations and advanced data analysis, we will discover new properties of turbulence. For example, we are investigating the phenomenon of abrupt plasma ejection due to turbulence (similar to solar flares). The triggers, detecting the precursors, and predicting the onset of it. In addition to fusion plasmas, we are working on the generation of scale-down models of astrophysical plasmas in the laboratory to understand astrophysical plasma dynamics.

Staff

Prof. Akihide Fujisawa
Prof. Shigeru Inagaki
Prof. Takuma Yamada

The Main Research Topics

  • Global full-wavelength survey of tokamak plasma turbulence
  • Self-sustained formation of plasma turbulence
  • Plasma turbulence control experiment by electromagnetic wave excitation
  • Laboratory Space Astronomy Plasma Physics
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