MEASUREMENT OF ENERGY FLUX DENSITY DISTRIBUTION IN THE FOCUS OF AN ARC IMAGE FURNACE
STANFORD RESEARCH INST MENLO PARK CA
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A calorimeter for mapping flux density in a focal volume is described. The design is based on an earlier design by Broido and Willoughby. It differs chiefly in two ways. First it is much smaller in order to permit its placement inside a test specimen chamber. Second the design provides for an aperture-containing shield which is placed in front of the receiving surface calorimeter in order to limit the area of beam which is intercepted. The decay constant is 2 x .002sec 1sec. Flux densities ranging from 5 to 120 calsq. cm.-sec can be conveniently measured over intercepted beam areas of from 0.03 to 0.2 sq. cm. With this calorimeter the flux density distribution in the focal volume of a double ellipsoidal arc image furnace system was determined.
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