Gas density and plasma

[QuarkDecay]

In general, when we say that in a fermionic gas the higher its density, the better we can consider it to be a plasma instead of gas?

 

[mfb]

Who says that where, in which context?

 

[QuarkDecay]

This is what I understood from reading about density in plasma (the n) and the parameters of a gas that make it a plasma. I'm not sure it's true though, that's why I asked.

 

[MathematicalPhysicist]

exact citation is required.

Though I am not an expert in plasma physics.