抄録
The discharge in a low pressure gas (<10 m Torr) is utilized as a method for preionization in a tokamak experiment or for generating a plasma of neutral particleinjector.
In such cases the discharge voltage becomes very high, as pd is very small. To make the discharge easier, a method which provides numerous initial electrons or which decreases the loss of charged particles with the help of a magnetic field, for example, is utilized.
Here the Z-discharge in a low pressure Ar gas, where numerous initial electrons were provided by a hot cathode, was studied.
This paper proposes a model of the mechanism of formation of an Ar arc-dischargefor plasma generation, and describes the loss mechanism of the highly ionized plasma in a low pressure gas discharge.
