A computational study of the diffusion of meteor trains using a self-consistent model for the space-charge electric field |
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| Authors: | WM Pickering |
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| Institution: | Department of Applied Mathematics and Computing Science, The University of Sheffield, Sheffield, S10 2TN, England |
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| Abstract: | The diffusion of meteor trains is studied numerically using a self-consistent model for the space-charge electric field. Detailed numerical results are presented for a cylindrical column of ionization formed at right angles to the geomagnetic field lines at altitude 102 km and it is shown that the ionization can become elongated in the magnetic field direction. It is also suggested that for a column formed at an angle θ to the magnetic field direction, such a field aligned elongation may be produced for θ> θ c, where θ c is the ‘critical angle’ defined by Kaiser, Pickering and Watkins (1969) (approximately 1 1/2° at 102km altitude). These results are in general agreement with the experimental work of Watkins, Eames and Nicholson (1971). |
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