Abstract
In recent years, β-particle surface applicators (such as32P,90Sr) have been widely used in treating some diseases of dermotology, ophthalmology, otolaryngology etc. in China. The powder metallurgy and metal rolling technology of strontium-90/yttrium-90 (β) sources and the manufacture process of90Sr/90Y surface applicators are described in this paper. For this kind of β radioactive sources, the strontium-90 insoluble compound is incorporated in a silver matrix which is sandwiched between the gold (or silver) face and the silver backing. The external surface of strontium-90 foil source is then protected by palladium or tungsten-nickel alloy coating. The characteristics of strontium-90 surface applicator are of uniform dose rate, small self-absorption and safety in use, so it can satisfy the requests of medical care.
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Shanyu, C., Yuhua, S., Wanshan, G. et al. Development of90Sr/90Y (β) surface applicators by powder metallurgical technology. Journal of Radioanalytical and Nuclear Chemistry, Articles 205, 113–120 (1996). https://doi.org/10.1007/BF02040557
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DOI: https://doi.org/10.1007/BF02040557