Sheath structure transition controlled by secondary electron emission at low gas pressure

@inproceedings{Schweigert2014SheathST,
  title={Sheath structure transition controlled by secondary electron emission at low gas pressure},
  author={Irina Schweigert and Samuel Langendorf and Michael Keidar and Mitchell L. R. Walker},
  year={2014}
}
In particle-in-cell Monte Carlo collision (PIC MCC) simulations and in an experiment we study sheath formation over an emissive floating Al2O3 plate in a direct current discharge plasma at argon gas pressure 10−4 Torr. The discharge glow is maintained by the beam electrons emitted from a negatively biased hot cathode. We observe three types of sheaths near the floating emissive plate and the transition between them is driven by changing the negative bias. The Debye sheath appears at lower… CONTINUE READING