what kind of containers are used to contain multimillion degree plasmas?

Answer 1

I suppose your best bet is a powerful magnetic field since a container made of any solid terrestrial material would vaporize instantly at best.

Try not to get too close though, that's pretty hot stuff. I'm not sure what the autoignition temperature of the atmosphere is but if you got something hot enough you could start the atmosphere on fire! I think some minority of scientists were worried about this happening when they tested the first atomic bomb.

Answer 2

You would need a container made out of a black hole. Now the problem would be to take it back out.

Now for real,
gravity of the plasma itself is the container for plasma in stars. No physical object can contain plasma as it would eventually melt, evaporate and turn into plasma itself.

An electromagnetic field would be an artificial way to "contain it" but would need energy to be maintained. A good way to maintain it would be to take energy from the plasma but then the plasma would soon loose its energy and end up up being just a gas.

Gravity is the most efficient plasma container. Now all we need is a modified gravity generator from the Enterprise or a small bit of a blackhole.

Answer 3

I thought I seen on the " Science Channel " a while ago where they are working on Plasma engines, and the plasma is contained with the use of " Magnetic Fields" within a chamber, if the field were to break down the plasma would dissolve right through the chamber and keep going.

Answer 4

Plasma is contained not by physical objects. It's contained in a magnetic field shaped to localize plasma to a controlled region in space. Although it is not a physical bottle as we typically know it to be, this arrangement of magnetic field is called a magnetic bottle.

Answer 5

Stars

Answer 6

multimillion degree proof containers...