Electromagnetic and chromatic analyses of plasma in transient state

PLS (Plasma Lighting System) is one of the discharge lamps that have electrodeless bulb. Simply, there are three states of materials which are initial, transient, and saturation during the lamp operation. In these states, transient state is very difficult to understand its physical phenomenon. Because a magnetron which is an electrical active source and plasma which is an electrical active load are not stabilized, electric and chromatic characteristics of plasma are changed simultaneously. In that reason, we conduct the experiment and the simulation to acquire a trajectory of plasma load in Rieke diagram, a variation of main frequency of a magnetron with varying an electric conductivity of plasma in the electromagnetic simulation, and CCT calculated from emission spectrum of plasma. Using electromagnetic and chromatic analyses, characteristic of plasma in transient state can be estimated.