Production of an Irreversible Joshi Effect in the Hysteresis-Range below the Threshold Potential

Abstract

THE fundamental importance of the threshold potential V_m in the production of the Joshi effect Δi and the preferential incidence of the latter in the high-frequency components of the discharge current have been established^1–6. Results were suggestive when Δi was studied in chlorine at and below V_m. Until this latter is reached, the current is small, say, i₁; it increases suddenly by a large amount at V_m, and rises rapidly thereafter. On decreasing the voltage below V_m, it decreased gradually to i₁ at V₁ (see graph). CA denotes i_D, the current in the dark when the voltage is reduced below V_m, and DE the corresponding current i_L under irradiation. The larger current (in the dark) while decreasing below the voltage V_m is due to hysteresis.