Test-ion diffusion in a magnetized plasma |
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| Authors: | Fasoli A. Skiff F.N. Good T.N. Paris P.J. Tran M.Q. |
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| Affiliation: | Centre de Recherches en Phys. des Plasmas, Ecole Polytech. Federale de Lausanne; |
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| Abstract: | Cross-field transport of barium test ions is studied in a Q-machine plasma. Test particles are produced and tracked in their motion by an optical tagging method. The comparison between the measured tag signal and a simple theoretical simulation yields an evaluation of the ion diffusivity. Diffusion is supported by classical mechanisms. The injection of different noble buffer gases modifies the plasma parameters in such a way that the diffusion remains classical but its magnitude is reduced |
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