CHARGED PARTICLE ACCELEROMETER.
PICATINNY ARSENAL DOVER N J ENGINEERING SCIENCES LAB
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An accelerometer has been proposed in which an electrically charged microscopic glass sphere acts as the proof mass. There is no electrode configuration capable of producing an electrostatic field in which such a proof mass may be contained in stable equilibrium however, if an alternating field is produced by properly shaped electrodes, the average effect of the field on a charged particle will be to drive it toward an equilibrium position. The electric fields produced by electrodes of cylindrical shape are determined and compared with those produced by electrodes shaped like hyperbolas of revolution and these in turn are compared with fields determined by a relaxation solution for an actual experimental configuration. The possible use of a device of this kind as an accelerometer is considered and a nomograph is presented by which theoretically possible performance characteristics may be determined. It is shown that, although an accelerometer might be produced using solely the electrodynamic containment of a charged particle, the performance would not be outstanding and more satisfactory results may be obtained by other means, relegating dynamic containment to a subsidiary role. Author
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