Plug and Thermal Barrier Potential Formations in a Tandem Mirror

概要

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It is shown that plug and thermal barrier potentials are created simultaneously by electron cyclotron resonance heating (ECRH) in the end-mirror cells of a tandem mirror without a high energy sloshing ion population. Monte-Carlo particle simulation is carried out to investigate the electrostatic potential formation in the steady state in the end-mirror cell. It is found that a combination of the plug and thermal barrier potentials can be created using a two-component distribution of electrons at the inner mirror throat and a non-Maxwellian distribution of electrons which are heated by the plug ECRH and trapped magnetically in the thermal barrier region. In addition to the electron distributions, the potential formations require the existence of non-Maxwellian ions trapped in the thermal barrier potential which are assumed to be lost radially.
社団法人プラズマ・核融合学会の論文
2001-11-25