Theory of instantaneous triple-probe method for direct-display of plasma parameters in a low density flowing collisionless plasma |
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| Authors: | M Kamitsuma |
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| Institution: | Center for Research in Experimental Space Science, York University, Downsview, Ontario, Canada;Department of Electrical Engineering, Musashi Institute of Technology, Tamazutsumi, Setagaya, Tokyo, Japan |
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| Abstract: | An exact theory is developed for a triple-probe in an orbit-motion-limited flowing collisionless plasma, i.e. when the charged particle mean free path ? Debye length ? probe radius, and the electron thermal velocity ? probe speed ? ion thermal velocity. Formulae for determining electron temperature and electron density are given for both spherical and cylindrical probes. Analytical results show that the effect of ion temperature on measurements of plasma parameters is small when the probe speed is large. |
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