Synthesis of 58Ni Target and Co Diffused Rh Composite for Application of Mössbauer Source

Abstract

The enriched 58 Ni powders are dissolved in acid solution and coated on a Cu target for proton irradiation at cyclotron to produce 57 Co radioisotope. The condition of the plating bath and the coating process are determined using the enriched powders. To establish the coating conditions for 57 Co, 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 57 Co 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.

Thermal Diffusion of 57Co into Rh Foil for Preparing Mössbauer Source

“…The results also indicate that the synthesized final products were composed by Co particles on the surface of Rh foil. In a previous study, a relatively low vacuum 10 -2 hPa under an inert Ar gas atmosphere was maintained during the diffusion process [4][5]. The diffusion yield of Co atoms into the Rh matrix is increased, with the rise in both the annealing temperature and heating time.…”

“…This 58 Ni is dissolved in an acid solution for making an electroplating buffer. After the process of 58 Ni electroplating onto the target materials, 58 Ni was irradiated with a proton beam [4]. An electroplating process was applied to form radioisotope 57 Co onto a metal sheet [5][6].…”