Reactive schemas on contact between metal and plasma

7 4 Reactive schemas on contact between metal and plasma 

Remember that the thickness of the sheath of potential is approximately the same as the Debye length of the particles in question, as we can demonstrate by studying the evolution of the concentrations in the one-dimensional flow of the 

In addition, we can introduce a pre-sheath which forms the junction between the plasma and the sheath, where the disequilibrium is slight. 

Finally, it ought to be mentioned that this approach can also be used with an instilative medium instead of the metal, with the surface potential then being the so-called floating potential corresponding to a total amoxmt of zero current collected. 

As an example of the interaction between surface and plasma in the presence of electrical and magnetic fields, we have chosen to look at Hall-effect thrusters (HETs), the recently-released miniaturized version of them and ways of modeling themd 

---