We have experimentally studied the electrical potential of a body which has an electromotive force in plasma. It has been found that the potential of the body is usually inclined to be negative with respect to the space potential, while it gets to be positive when the body has an emissivity of electrons. These results can be applied to study the potential of the satellite Io which has a strong electromotive force in the Jupiter magnetosphere. They will be also applied to control the electrical potential of a large facility such as the space station flying in the ionosphere which generates V x B electromotive force.
プラズマ中における起電力体の電位に関する実験的研究
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