Studies on the234U and238U ratio in natural materials

With the use of an 80 MeV isochronous cyclotron, a preparation procedure for¹²³I is outlined. The nuclear reaction applied in the process is: $$^{127} Ileft( {p,5n} right)^{123} Xexrightarrow[{2.1h}]{{beta ^ + CE}}^{123} I$$ A liquid target is irradiated and a continuous gas-liquid extraction of parent¹²³Xe is performed. After a short growth time the daughter¹²³I is dissolved and treated for various applications. The radionuclidic purity is very high, only¹²⁵I is detectable with a maximum of 0.2% to the end of the preparation process. In this production of carrier-free¹²³Xe and¹²³I, the major chemical problem consists of a separation into microquantities. Attempts to find a solution to various technical problems are also described.