Faraday cage method applied to fluidized beds and suspensions

11 Faraday cage method applied to fluidized beds and suspensions. 

They found a decreasing charge to mass ratio from 88.9 to 69.8 fC as the superficial air velocity was increased from 5.45 to 8.40 cm/s. 

A double shielded Faraday cage was used by Tardos et. al. (1984) for sampling 1.049 pm aerosol of polystyrene latex. Charge and current magnitudes were of the order 10 17 C per particle and 10 I3A respectively. They find that the particle charge Q is related to the current I by the relation 

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