The en-riched 58Ni powders are dissolved in acid solution and coated on a Cu target for proton irradiation at cyclotron to produce 57Co radioisotope. The condition of the plating bath and the coating process are determined using the en-riched powders. To establish the coating conditions for 57Co, non-radioactive Co ions are dissolved in an acid solution and electroplated on to a rhodium plate. The thermal diffusion of electroplated Co into a rhodium matrix was studied to apply a 57Co Mssbauer source. The diffusion depth from surface to matrix of Co is depended on the annealing temperature and time. The deposited Co atoms diffuse completely into a rhodium (Rh) matrix without substantial loss at an annealing temperature of 1200 for 4 hours.

• 엄영랑(한국원자력연구원 동위원소이용연구부) | Young Rang Uhm Corresponding author
• 최상무(한국원자력연구원 동위원소이용연구부) | Sang Mu Choi
• 김종범(한국원자력연구원 동위원소이용연구부) | Jong-bum Kim
• 손광재(한국원자력연구원 동위원소이용연구부) | Kwang Jae Son