Abstract
The generation of anomalous collision rate and resistivity by lower-hybrid drift waves is investigated. A general expression involving particle density and current perturbations and electromagnetic field fluctuations is used to estimate the effective collision frequency. Results of Vlasov-code simulations and Cluster spacecraft measurements suggest that electrostatic and electromagnetic fluctuations provide approximately equal contributions to the electron collision rate, which is of the order of the lower-hybrid frequency. The anomalous resistivity based on such collision rate could be significant for the large-scale plasma dynamics in Earth’s magnetosphere, such as magnetic reconnection.
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