Top: dependence of the relaxation time τd for charge deviations on the grain’s radius a. The results presented for NaCl grains immersed in typical plasma conditions expected at r ~ 5.7RJ distance in the Jupiter system (see text). The result (i) is obtained for the generalized Js model (7) and compared to results (ii) obtained using the Sternglass approximation for SEE. Bottom: dependence of the charge number |⟨N⟩| on grain’s radius a with the same parameters and notation as for Fig. 5 (top).
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