Study of Potential Formation in an Open Magnetic Field Configuration

概要

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A theoretical model is developed on the electrostatic potential which is formed dur-ing fundamental electron cyclotron resonance laeating in an end region of a tandemmirror. The model includes experimental conditions such as expanding magnetic fluxtube, multicomponent electron temperature and secondary electrons emitted from anend plate. The axial potential profile of a collisionless plasma is analyzed with non-Maxwellian velocity distribution functions of ions and electrons. The potential profilein the plasma region, where the charge-neutrality holds, depends predominantly onthe magnetic field profile. The potential drop in the sheath region in front of the endplate strongly depends on the secondary electrons and the fraction of the higher fern-perature component of the primary electrons.[open magnetic field, tandem mirror, electrostatic potential, ECRH, end-loss ]} warm electron, sheath, secondary electron emissionl
社団法人日本物理学会の論文
1992-09-15