For 10 points, name this "fourth" state of matter.
The Vlasov equation governs long-range interactions in these substances, which screen out electric fields above the Debye (dih-BAHY) length. They are confined by a magnetic field in the donut-shaped "tokamak." The Large Hadron Collider is attempting to produce the quark-gluon type of them. They were named by Irving Langmuir for their resemblance to a component of blood and are seen in solar wind, neon signs, stars, and a type of TV screen. For 10 points, name this "fourth" state of matter.
The Vlasov equation governs long-range interactions in these substances, which screen out electric fields above the Debye (dih-BAHY) length.
{plasmas}