Abstract
In general, plasma motion induced by an electric field produces an electromagnetic field. However, in many cases of interest, the field produced by the plasma motion can be represented solely by an electric field, without being accompanied by magnetic field perturbations. Such is the case when a charge density fluctuation is produced in a plasma with no magnetic field. In this case, the induced plasma motion is parallel to the electric field E due to the charge fluctuation, therefore the modification of the field due to the plasma motion is also parallel to E. As a result, the curl of E vanishes and no magnetic field results. A similar situation takes place when an electric field perturbation is along a static magnetic field. In these cases, the electric field can be expressed in terms of an electrostatic potential E = ‒∇ϕ. The plasma response that can be expressed by an electrostatic potential alone is called the electrostatic response. In this chapter, we shall consider only such responses.
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© 1990 Springer-Verlag Berlin Heidelberg
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Nishikawa, K., Wakatani, M. (1990). Electrostatic Response. In: Plasma Physics. Springer Series on Atoms+Plasmas, vol 8. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-02658-8_5
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DOI: https://doi.org/10.1007/978-3-662-02658-8_5
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