Radioactive Cobalt Laboratory for Chemical Research

Abstract
The essential features of two Co60 γ‐ray irradiation chambers designed primarily for chemical studies are described. The ``multisource chamber'', holding up to a maximum of five separate Co60 sources in a movable shield mounted on top of the chamber, is designed basically for studies on the effect of dosage rate. Up to a total of 100 curies of cobalt activity may be housed in this chamber. The ``double cavity irradiation chamber'' is provided with a single 400 curie Co60 source which may be lowered into either of two irradiation cavities. One of these cavities is a thermostated well that may be maintained at constant temperatures in the range from −30°C to 130°C. Two intermittent γ‐ray devices are also described.

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