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Millimicrosecond Light Source with Increased Brightness

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Abstract

Short light pulses with ⪝2 × 10−9 sec rise time and ⪝8 × 10−9 sec half-width are obtained in a coaxial capacitor discharge in air of minimum inductance, ⪝1 × 10−9 henry; capacitor energies are in the order of 10−2 joule. The current density in the arc channel, ~0.1 mm in diameter, exceeds 107 amp/cm2; arc channels appear to be pinched. A brightness of >107 candles/cm2 is determined and the method of measurement described. Single-shot photography is shown.

© 1961 Optical Society of America

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