Gyro-phase drift is a guiding center drift that is directly dependent on the charging rate limit of dust grains. The effect of introducing a gyro-phase-dependence on the grain charge leads to two orthogonal components of guiding-center drift. One component, referred to here as grad-q drift results from the time-varying, gyro-phase angle dependent, in-situ-equilibrium grain charge, assuming that the grain charging is instantaneous. For this component, the grain is assumed to be always in its in-situ-equilibrium charge state and this state gyro-synchronously varies with respect to the grain's average charge state. The other component, referred to here as the gyro-phase drift, arises from any non-instantaneous-charging-induced modification of the grad-q drift and points in the direction associated with increasing magnitude of in-situ-equilibrium charge state. Gyro-synchronous grain charge modulation may arise from either abrupt or gradual inhomogeneity in plasma conditions. In the abrupt inhomogeneity, q1 is the in-situ-equilibrium charge on one side of the inhomogeneity, q2 is the in-situ equilibrium charge on the other side, q1 Gyro-synchronous grain charge modulation may arise from either abrupt or gradual inhomogeneity in plasma conditions. In the abrupt inhomogeneity, q1 is the in-situ-equilibrium charge on one side of the inhomogeneity, q2 is the in-situ equilibrium charge on the other side, q1
|Advisor:||Koepke, Mark E.|
|Commitee:||Cassak, Paul, Lewellen, David, McLaughlin, Maura, Scime, Earl|
|School:||West Virginia University|
|Department:||Eberly College of Arts & Sciences|
|School Location:||United States -- West Virginia|
|Source:||DAI-B 76/09(E), Dissertation Abstracts International|
|Keywords:||Dusty plasma, Grain charging, Gyro-phase drift, Inhomogeneity, Plasma physics|
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