Evaluation of the Technological Parameters of a Solution Target for 82Sr Production

Abstract

The concept of a solution target for obtaining the radioisotope ⁸²Sr via the reaction Rb(p, xn)⁸²Sr is propounded. A computational estimate of the main technological parameters of a solution target is made. The ⁸²Sr yield in a solution target is calculated for solutions of certain compounds of rubidium and initial proton energy 70 MeV. It is shown that the highest ⁸²Sr yield 7.44 MBq/(μA·h) in a solution target can be obtained by using a saturated solution of RbF. The solution fl ow rate in the circulation loop of the target allowing the operation of a target without boiling-up in a 100 μA proton beam is obtained for a target solution with RbF. The mass/size parameters of the heat-exchanger allowing the solution to be cooled tothe initial temperature in a single pass are calculated. The infl uence of radiolysis of the proton-irradiatedsolution on the operation of the target is determined. It is shown that on the whole radiolysis of the solution target is not large but does require defi nite efforts to utilize the hydrogen.