I read the article. http://www.plasmafocus.net/IPFS/modelpackage/File2Theory.pdf
Take a look at the phase 2, using the slug model, page 6:
“The speed of the inward radial shock front (see Fig 1b)is determined by the magnetic pressure (which depends on the drive current value and CS position rp)”
So, what I meant is based on this:
http://en.wikipedia.org/wiki/Double_layer_(plasma)
I didn’t know the name of the phenomena before, but this is what I was thinking. A polar gas would give a doping of ions to the double layer of the advancing magnetic piston, which would increase the steep of the potential, accelerating the front wave even more. That would cause a faster pinch and higher end temperature.
