Effect of surface and volume ionization on the electrode potential drop
- 29 Downloads
We consider the change in the potential of the electric field in the “free fall” layer at the electrodes as a function of the characteristics of the surface and the volume ionization. Systematic calculations are made of the electrode potential drop for a tungsten cathode and anode in a lithium and cesium plasma. The potential of the electric field is obtained as a function of the plasma pressure, the degree of volume ionization, the electron temperature, the electrode temperature, and the current density.
KeywordsMathematical Modeling Lithium Mechanical Engineer Tungsten Cesium
Unable to display preview. Download preview PDF.
- 1.L. N. Dobretsov and M. V. Gomoyunova, Emission Electronics [in Russian], Nauka, Moscow (1966).Google Scholar
- 2.A. D. Lebedev, “Phenomena adjacent to the electrodes in a gas discharge,” Zh. Tekh. Fiz.,38, No. 10, 1719 (1968).Google Scholar
- 3.É. Ya. Zandberg and N. I. Ionov, “Surface ionization,” Usp. Fiz. Nauk,67, No. 4, 581 (1959).Google Scholar
- 4.É. Ya. Zandberg and A. Ya. Tontegode, “Thermionic emission constants of wires of molybdenum, tantalum, and tungsten,” Zh. Tekh. Fiz.,35, No. 8, 1501 (1965).Google Scholar
- 5.H. L. Garvin and R. G. Wilson, “Electrode materials for cesium contact ion engines,” AIAA Journal,3, No. 10, 1867 (1965).Google Scholar
- 6.R. G. Wilson, “Vacuum thermionic work functions of polycrystalline Nb, Mo, Ta, W, Re, Os, and Ir,” J. Appl. Phys.,37, No. 8, 3170 (1966).Google Scholar
- 7.R. G. Wilson and E. D. Wolf, “Electron and ion emission from iridium in lithium vapor,” J. Appl. Phys.,37, No. 12, 4458 (1966).Google Scholar
- 8.N. I. Alekseev and D. L. Kaminskii, “Ionization of some rare-earth elements on tungsten, rhenium, and iridium surfaces,” Zh. Tekh. Fiz.,34, No. 8, 1521 (1964).Google Scholar
- 9.S. E. Moore, Atomic Energy Levels, Washington (1949).Google Scholar