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Velocity space diffusion in Q-machine plasmas
Abstract
We report measurements of test particle diffusion in velocity space. Test particles are created and examined using the method of optical tagging, an extension of laser-induced fluorescence. In quiet plasma conditions (δn/n ≤ 0.01%) results show diffusion to be linear with density in agreement with classical theory. Measurements taken in the presence of drift waves (δn/n ≃ 6%) show resonant particle interactions. Applications to magnetospheric phenomena will be discussed. © 1992 IEEE
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