Preparation of Enriched ¹¹²Cd Target by Electroplating

The electroplating process of the enriched ¹¹²Cd target for producing high radionuclidic purity ¹¹¹In in a CS-30 cyclotron was developed. For the first time, accurate electroplating was achieved based on the track of cyclotron beam bombardment. At the same time, various factors affecting the quality of the enriched ¹¹²Cd target were studied, and then the optimal electroplating conditions were determined. Finally, the enriched ¹¹²Cd targets with a thickness greater than 65 mg/cm² was obtained, which had smooth surface and dense and firm coating. The relationship between enriched ¹¹²Cd target thickness and yield was preliminarily explored. When the enriched ¹¹²Cd target thickness was 90 mg/cm2, the yield of ¹¹¹In can reach 222 MBq/μA·h and the radionuclide purity is 99.9%.