The screening out of electric fields by electrons occurs over a scale known as the Debye length, and examples include St. Elmo's Fire, lightning, and very small grains.
Alfven waves occur in these substances, while longitudinal space charge waves experience Landau damping in them. They can be modeled with the Vlasov-Poisson equations, and they carry Birkeland currents. The screening out of electric fields by electrons occurs over a scale known as the Debye length, and examples include St. Elmo's Fire, lightning, and very small grains. For 10 points, name this state of matter, typically an ionized gas.
Alfven waves occur in these substances, while longitudinal space charge waves experience Landau damping in them.
{Plasmas}