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뫼스바우어선원 적용을 위한 <sup>58</sup>Ni 표적체 및 Co가 확산된 Rh복합재 제조
엄영랑,최상무,김종범,손광재,Uhm, Young Rang,Choi, Sang Mu,Kim, Jong-bum,Son, Kwang Jae 한국분말야금학회 2015 한국분말재료학회지 (KPMI) Vol.22 No.6
The en-riched $^{58}Ni$ 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 en-riched 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.