A WALL STABILIZED NITROGEN ARC MODEL AT DIFFERENT CONCENTRATION OF SILVER VAPOR AND CURRENT INTENSITY

This paper presents theoretical results for a nitrogen are contaminate d with silver vapours emitted from are electrode in a range from 0 to 10% and current intensity between 5 to 50 A. By solving the equation o f conservation of energy, the effect of these vapours on the are plasm a characteristics are studied. In particular it was seen that the pres ence of 10(-4%) Ag in the arc column decreases strongly the axial temp erature while the presence of 10(-1%) Ag has an explicit decreases in the electric field at current near 20 A.