| Autor: |
D. Yu. Chuvilin, V. E. Khvostionov, D.V. Markovskij, N.N. Ponomarev-Stepnoy, J. Rice, A. V. Shatrov, A. N. Udovenko, L.A. Tome, V. A. Pavshook, Yu. I. Vereschagin |
| Rok vydání: |
2007 |
| Předmět: |
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| Zdroj: |
Applied Radiation and Isotopes. 65:1087-1094 |
| ISSN: |
0969-8043 |
| DOI: |
10.1016/j.apradiso.2007.05.002 |
| Popis: |
The new method for medical 89 Sr production in a reactor with solution fuel is proposed which is characterized by simplicity, high production efficiency and low buildup of radioactive waste. The main advantages of the new technology were validated by numerous experiments. The proposed new technology selectively extracts 89 Sr from a fuel of solution reactor and precludes penetration of 90 Sr into the final product. This method is based on the presence of gaseous radionuclide 89 Kr ( T 1/2 =190.7 s) in the decay chain 89 Se→ 89 Br→ 89 Kr→ 89 Rb→ 89 Sr. The performed experiments on taking the gas probes from internal volume of the solution 20 kW mini-reactor “Argus” have confirmed that the mechanism for 89 Sr delivery to the sorption volume of the reactor experimental loop is based on transport of gaseous 89 Sr predecessor-radionuclide 89 Kr. According to the measurements of radioactive impurities in a final 89 SrCl 2 solution, the filtration of the gas flow with cermet filters followed by cleaning of 89 Sr chloride solution in chromatographic columns with DOWEX-50×8 or Sr-Resin ensures reception of 89 Sr fully meeting the requirements for medical application. The experimental estimations have shown that the proposed new technology is multiply more productive than the traditional industrial methods of 89 Sr reception. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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Full Text from ScienceDirect