アルゴンおよびヘリウム弱電離プラズマの非平衡ノズル流れ

抄録

The nozzle flows of weakly ionized plasmas of helium and argon are considered. It is assumed that the plasmas are composed of neutral atoms, singly ionized positive ions and electrons, that the flows are quasi-one-dimensional, and that the chargeneutrality is almost maintained throughout the nozzle. The flows start from a nonequilibrium state with regard to the energy and the ionization. As they flow through the nozzle, the electron-ion recombination and the adjustment of the temperature difference between the electron gas and the atom-ion gas occur. The electron temperature, the rate of ionization and the other flow parameters along the nozzle axis are calculated.