ABSTRACT
Plasma is a compound phase with electric quasi-neutrality, generally consisting of electrons, positive ions, and neutral molecules. In particular, strongly ionized plasma consists of electrons and positive ions. The phase is called collisionless plasma, as the electron (ion) has few short-range binary collisions with neutral molecules, and the plasma system is subject to long-range Coulomb interactions. When the short-range two-body collision is major, the system is collisional, that is, collision dominated. Collisionless plasma shows unique characteristics. We briefly describe the characteristics [1-3].
