Effects of electrical charging on the mechanical Q of a fused silica disk

@article{Mortonson2003EffectsOE,
  title={Effects of electrical charging on the mechanical Q of a fused silica disk},
  author={Michael J. Mortonson and Christophoros Christou Vassiliou and David J. Ottaway and D. H. Shoemaker and Gregory M. Harry},
  journal={Review of Scientific Instruments},
  year={2003},
  volume={74},
  pages={4840-4845}
}
We report on the effects of an electrical charge on mechanical loss of a fused silica disk. A degradation of Q was seen that correlated with charge on the surface of the sample. We examine a number of models for charge damping, including eddy current damping, and loss due to polarization. We conclude that rubbing friction between the sample and a piece of dust attracted by the charged sample is the most likely explanation for the observed loss. 

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