TERRAPUB Earth, Planets and Space

Earth Planets Space, Vol. 53 (No. 6), pp. 527-530, 2001

High-power heating of spherical tori by use of magnetic reconnection

Yoshinobu Ueda1 and Yasushi Ono2

1Department of Electrical Engineering, University of Tokyo, Tokyo 113-8656, Japan
2High Temperature Plasma Center, University of Tokyo, Tokyo 113-8656, Japan

(Received June 21, 2000; Revised March 30, 2001; Accepted May 3, 2001)

Abstract: A novel high-power heating experiment of spherical tori (ST) has been developed in the TS-3 reconnection device using magnetic reconnection of merging STs. This method enables us to inject whole magnetic and thermal energies of a colliding ST into a target ST within short reconnection time. The maximum heating power of 15 MW was obtained in our low-field (0.03-0.08~T) and small-scale (R < 0.2 m) merging experiment. This heating energy is provided mostly by anomalous ion heating effect of magnetic reconnection. The ion heating energy and the merging speed increases with decreasing the q-value (Bt component) of the ST. This heating effect causes the b-values of STs to increase by factor 2-3.

Corresponding author E-mail: kien@katsurai.t.u-tokyo.ac.jp

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