Abstract
We report here simultaneous measurements of sheath electric field and dust charge using various sizes of dust particle. By measuring the equilibrium position and resonant oscillation frequencies of particles of various sizes, the values of E and QdE′ were obtained as a function of position within the sheath from which Qd can also be determined as a function of position within the sheath. The E profiles obtained have been compared with sheath models. It was found that electric field is indeed linear in the middle of the sheath for a wide range of pressure (50–300 mTorr). A non‐linear dependence for E in the region near sheath boundary was found for the pressures under 50 mTorr.
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