• Corpus ID: 219176523

Dust impact voltage signatures on Parker Solar Probe: influence of spacecraft floating potential.

  title={Dust impact voltage signatures on Parker Solar Probe: influence of spacecraft floating potential.},
  author={Stuart. D. Bale and Keith Goetz and John W. Bonnell and Anthony William Case and C. H. K. Chen and Thierry Dudok de Wit and L. Claire Gasque and Peter R. Harvey and Justin C. Kasper and Paul J. Kellogg and Robert J. Macdowall and Milan Maksimovi{\'c} and David M. Malaspina and Brent Page and Marc P. Pulupa and Michael Louis Stevens and Jamey R. Szalay and Arnaud Zaslavsky},
  journal={arXiv: Space Physics},
When a fast dust particle hits a spacecraft, it generates a cloud of plasma some of which escapes into space and the momentary charge imbalance perturbs the spacecraft voltage with respect to the plasma. Electrons race ahead of ions, however both respond to the DC electric field of the spacecraft. If the spacecraft potential is positive with respect to the plasma, it should attract the dust cloud electrons and repel the ions, and vice versa. Here we use measurements of impulsive voltage signals… 

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