Application of Radioactive Tracers to the Study of Shaped Charge Phenomena

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Abstract
The problem of determining the velocity of a given element in a shaped charge jet as a function of the position of that element in the parent liner has been attacked with the help of radioactive tracers. Radioactively tagged liners were fired into stacks of steel plates, and the depth reached by the tagged element in each case was determined by radioactive assay of the plates. The resulting depth v rsus position curve was combined with emergent jet velocity data to yield velocity as a function of position. The results are in rough qualitative agreement with those previously obtained by the somewhat unwieldy method of collecting and weighing jets and slugs. The radioactive method is more direct and appears to be capable of sufficient refinement to warrant its use as a research tool.

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