Demixing in a metal halide lamp, results from modelling

Convection and diffusion in the discharge region of a metal halide lamp is studied using a computer model built with the plasma modeling package Plasimo. A model lamp contg. mercury and sodium iodide is studied. The effects of the total lamp pressure on the degree of segregation of the light emitting species are examd. and compared to a simpler model with a fixed temp. profile. Significant differences are obsd., justifying the use of the more complete approach. [on SciFinder (R)