A new production method for carrier-free201Tl using IEN'S cyclotron in Rio De Janeiro |
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Authors: | J L Q de Britto A M S Braghirolli A G da Silva |
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Institution: | 1. Instituto de Engenharia Nuclear-CNEN, Rio de Janeiro, Brasil
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Abstract: | A new and simplified method was developed for the separation of thallium 201 which will allow the shipment of a “one shot generator” to distant places and easy elution at the destination. Thallium is produced as usually, through the reaction $${}^{nat}Tl/p,xn/^{201} pb\xrightarrow{{\beta ^ + }}{}^{201}Tl$$ with 24-MeV protons from IEN'S CV-28 cyclotron. The separation is based on the properties of a chelating carboxylic acid cation exchange resin column which at pH 4.5 retains lead while thallim is easily eluted. This column can also be used as a regular generator to produced greater quantities of201Tl but at the expense of more elutions. |
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