Abstract

The radiant energies per square centimeter of six capacitor discharge lamps, with and without reflectors, were measured by the heating effects they produce in a standard graphite cylinder exposed to the flash. Energies as high as 26 joules cm−2 for a single flash are reported. Irradiances were estimated from oscilloscope intensity-time data, and shown to be as high as 66 kw cm−2. This is at least an order of magnitude greater than the irradiances obtainable in solar and arc image furnaces. The usefulness of capacitor discharge lamps as rapid heat sources is discussed.

© 1961 Optical Society of America

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