Sheath instability

Sheath instability is an instability in a plasma device where ions form sheaths near an electrode, making the plasma unstable. It is a type of Rayleigh–Taylor instability.^[1]^[2]

Formula

$\omega ^{2}-({\frac {e}{m}})E_{0}(L_{n}^{-}1+{\frac {n_{1}^{'}}{n_{0}}})-i{\omega }v_{0}^{'}=0$

References

^ "Instability, collapse, and oscillation of sheaths caused by secondary electron emission | Physics of Plasmas | AIP Publishing".
^ Campanell, M. D.; Khrabrov, A. V.; Kaganovich, I. D. (2012-06-04). "General Cause of Sheath Instability Identified for Low Collisionality Plasmas in Devices with Secondary Electron Emission". Physical Review Letters. 108 (23): 235001. Bibcode:2012PhRvL.108w5001C. doi:10.1103/PhysRevLett.108.235001. PMID 23003962.

[1] "Instability, collapse, and oscillation of sheaths caused by secondary electron emission | Physics of Plasmas | AIP Publishing".

[2] Campanell, M. D.; Khrabrov, A. V.; Kaganovich, I. D. (2012-06-04). "General Cause of Sheath Instability Identified for Low Collisionality Plasmas in Devices with Secondary Electron Emission". Physical Review Letters. 108 (23): 235001. Bibcode:2012PhRvL.108w5001C. doi:10.1103/PhysRevLett.108.235001. PMID 23003962.

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