"the stability of spheromak plasmas also allows their creation by 'gun' devices. In a plasma gun, a pulse of electricity ionizes some gas, which is expelled from the barrel and coalesces into a stable spheromak."
I believed a similar process could work with 20MK plasma from the corona but I'm wrong.
Also, I don't believe the bulk of the corona is quite that hot. Wikipedia says 1-3 MK, not 20.
"The low corona, which is very near the surface of the Sun, has a particle density around 1015–1016 m−3.
The average temperature of the corona and solar wind is about 1 million–2 million kelvins, however, in the hottest regions it is 8 million–20 million kelvins.[54] "I can't access the paper on reference 54 anyway so I can't be more precise.
Quote from: kfsorensen on 05/22/2010 04:58 pmFusion doesn't take place in the outer layers of the Sun. Only in the core, and you can't duplicate the conditions and confinement there.I knew that fusion doesn't take place in the corona but I also know that you can find plasma from 1MK to 20MK there, and it's actually a scientific question how it reaches similar temperatures at such a great distance from the center, especially since there is a lower layer as cold as 4100K.
Fusion doesn't take place in the outer layers of the Sun. Only in the core, and you can't duplicate the conditions and confinement there.