Simulations of self-magnetization in dusty space plasmas comparing different charge polarities and charge numbers of the dust |
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Authors: | HM Wiechen |
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Institution: | Geophysical Institute, University of Alaska Fairbanks, 903 Koyukuk Drive, Fairbanks, AK 99775-7320, USA |
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Abstract: | In partially ionized dusty space plasmas collisional momentum transfer between neutral and charged components of different inertia yields significant self-induced magnetic fields on remarkable short time scales of several dust Alfven times. Considering the proto-solar accretion disk previous first self-consistent plasma-neutral gas-dust simulations have shown, that this process yields a self-magnetization of 10-5- on time scales of about 100 days. Thus, this mechanism is able to explain the remanent magnetization of chondrite type meteorite matter. New simulations show the quantitative dependence of the self-magnetization on polarity and charge numbers of the dust grains. |
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Keywords: | Proto-solar nebula Dusty plasmas Magnetic fields Chondrites Meteorites |
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