Production of carrier - free 99Mo by the nuclear - recoil process and the use of some organic catchers
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Date
1979-02
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Publisher
Turkish Atomic Energy Commission, Ankara Nuclear Research and Traning Center
Abstract
Bu çalışmada Szilard - Chalmers sürecinden ve bazı organik kimyasal ökselerden yararlanılarak, taşıyıcısız ya da büyük ölçüde zenginleştirilmiş biçimde 99Mo elde etme olanakları araştırıldı. Bunun için nötronlarla ışınlamak üzere hedef madde olarak molibden heksakarbonil ile oksalik asit, ftalik asit ya da süksinik karışımlarından hazırlanmış tabletler kullanıldı. Işınlanmış maddeler uygun çözücüde çözülerek bir mikrofiltreden süzüldükten sonra, sıvı faza geçen 99Mo aktivitesi, inaktif molibden yüzdesi ve zenginleşme faktörleri tayin edildi. Elde edilen sonuçlar ftalik asitli karışımların amaca uygun olmadığını, oksalik ve süksinlik asitli karışımlar için zenginleşme faktörünün 500 dolayına kadar çıkabildiğini, bu karışımların kısa süreli ışınlamalarla taşıymışız 99Mo üretimine uygun olduğunu gösterdi.
In this study, the possibilities of obtaining carrier-free or highly enriched 99Mo radioisotope, by the application of Szilard - Chalmers process and taking advantage from the catcher properties of some organic chemicals, have been investigated. The tablets prepared by mixing of molybdenum hexacarbonyl with oxalic acid, phtalic acid and succinic acid in varying concentrations were used as target materials for the thermal neutron irradiation. The irradiated tablets were dissolved in a suitable solvent and then filtered through a microfilter. The activity of 99Mo which was retained in the liquid phase, the percentage of inactive molybdenum and the enrichment factors were determined. Results have indicated that phtalic acid was not suitable for the purpose. The enrichment factors as high as 500 were obtained for mixtures with oxalic acid and succinic acid, and these mixtures were found to be suitable for the production of carrier-free 99Mo by a short irradiation process.
In this study, the possibilities of obtaining carrier-free or highly enriched 99Mo radioisotope, by the application of Szilard - Chalmers process and taking advantage from the catcher properties of some organic chemicals, have been investigated. The tablets prepared by mixing of molybdenum hexacarbonyl with oxalic acid, phtalic acid and succinic acid in varying concentrations were used as target materials for the thermal neutron irradiation. The irradiated tablets were dissolved in a suitable solvent and then filtered through a microfilter. The activity of 99Mo which was retained in the liquid phase, the percentage of inactive molybdenum and the enrichment factors were determined. Results have indicated that phtalic acid was not suitable for the purpose. The enrichment factors as high as 500 were obtained for mixtures with oxalic acid and succinic acid, and these mixtures were found to be suitable for the production of carrier-free 99Mo by a short irradiation process.
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Keywords
Production of carrier - free 99Mo, Taşıyıcısız 99Mo üretimi, Nuclear - recoil process, Nükleer geri tepme işlemi, Use of some organic catchers, Bazı organik yakalayıcıların kullanımı
Citation
Edgüer, E. (1979). Production of carrier - free 99Mo by the nuclear - recoil process and the use of some organic catchers. Technical Journal, 6(1), 3-12.