Linear and Nonlinear Theory of Grid Excitation of Low-Frequency Waves in a Plasma
نویسنده
چکیده
The steady-state excitation of longitudinal waves by a pair of idealized grids immersed in a collisionlcss plasma and driven at a frequency small compared with the ion plasma frequency is investigated theoretically. In linear theory the Fourier-inversion integral which determine the spatial behavior of the potential in the plasma is expressed as a sum of two integrals which embody the interactions of phase-velocity components of the wave with ions and electrons. An appropriate choice of the deformed contour of integration permits evaluation of the response as the sum of the reside of the dominant "ion-acoustic" pole and of the two •
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