Abstract
A compact ignition system for antenna-excited microwave discharge lamps filled with extremely high pressure mercury has been investigated using 2.45 GHz microwave power from a solid-state microwave generator. The properties of the present lamps were compared with those of conventional lamps ignited by AC electric power. It was found that the emission spectra were almost the same as each other. As a consequence, antenna-excited microwave discharge can be applied to the ignition for so-called superhigh-pressure mercury lamps, inside which the pressure is around 200 to 300 atm during lamp ignition.
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