Modelling of the low‐pressure argon positive column

摘要: The properties and operating characteristics of the positive column a low‐pressure in argon have been investigated experimentally theoretically. In experiments pressure was varied from 5×10−2 to 1 Torr, discharge current 0.2–20 mA, tube 2.6 cm inside diameter. Measurements axial electric field, electron density population 3P2 metastable states are reported for various conditions. A test is made usefulness two‐moment theory which applicable intermediate range this work, i.e., transition inertia‐limited mobility‐limited flow ions wall, prediction characteristics. For purpose, excitation ionization rates, transport parameters were calculated homogeneous Boltzmann equation. predicted similarity laws reasonable agreement with measurements only lower regio...