Secondary electron emission yield from high aspect ratio carbon velvet surfaces

The plasma electrons bombarding a plasma-facing wall surface can induce secondary electron emission (SEE) from the wall. A strong SEE can enhance the power losses by reducing the wall sheath potential and thereby increasing the electron flux from the plasma to the wall. The use of the materials with...

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Veröffentlicht in:	Journal of applied physics 2017-11, Vol.122 (17)
Hauptverfasser:	Jin, Chenggang, Ottaviano, Angelica, Raitses, Yevgeny
Format:	Artikel
Sprache:	eng
Schlagworte:	70 PLASMA PHYSICS AND FUSION TECHNOLOGY Carbon fibers Dependence Electron beams Electron density Electron emission Electrons Hall thrusters High aspect ratio Packing density Power loss Sheaths Surface roughness
Online-Zugang:	Volltext
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