Turbulent Heating of Plasma in a TBS-Field

概要

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Turbulent heating of a plasma by the strong field fluctuations induced by the electric field across the mirror axis of the TBS-field which drives the relative motions of electrons and ions by the E×B drift has been investigated. The dependence of the ion and the electron thermal energy on the applied electric field are studied by means of a multi-grid energy analyser and the absorption method of the soft X-ray radiated from the plasma. By frequency spectrum analysis of the electric field fluctuations, an instability of a long wave-length is observed. (Ω_i<<ω≈ω_<LH><<II_e where Ω_i, II_e are the ion cyclotron frequency and the electron plasma frequency respectively, ω_<LH>≈1.7×10^7 rad/sec the lower hybrid frequency, and ω the frequency of the observed instability.) The ions and the electrons are thermalized till the final state gets into (T_<i+>/m_i)^<1/2>≈(T_<e+>/m_i)^<1/2>=1/2V_E, where V_E is the initial relative drift velocity at the center of the TBS-field.
東海大学の論文
1975-03-01