Theory, lab and space experiments, and calculations related the physics of plasmas, i.e., matter constituted by ionized atoms.

The critical conditions necessary for a medium containing charged particles to be considered a plasma are:

  • the collection of particles in a given volume, typically a Debye sphere, exhibit a collective fluid-like behavior;
  • the Debye length be much smaller than the system size (i.e., avoid boundary/edge effects); and
  • the plasma frequency be much larger than the collision rate between electrons and neutral particles.

Wikipedia has a rather large list of topics related to plasmas.

When to Use this Tag

covers the physical description of plasmas (ionized media). It should be distinguished from . It can be combined with other tags such as or to specify what type of plasmas are involved.