Evaluation of production data of positron emitting radionuclide 55Co and measurement of proton and deuteron induced reaction cross sections for natNi

摘要

Production cross sections of natNi(d,x)56,57Ni, 55,56,57,58Co, 52,54Mn, 51Cr nuclear reactions up to 40 MeV, and of natNi(p,x)60,61Cu, 56,57Ni, 55,56,57,58Co nuclear reactions up to 65 MeV, were measured by using the stacked-foil activation technique in combination with high resolution ?-ray spectrometry. The results were compared with the available literature values, predictions of the nuclear reaction model codes ALICE-IPPE, TALYS1.4, and extracted data from the TENDL-2012 library. The new measured data removed some discrepancies and the nuclear model calculations were found to reproduce the experimental data only with partial success. Spline fits were made on the basis of selected data, from which physical yields were calculated and compared with the literature values. In the case of deuteron, the thick target yield was also directly measured and compared with the theoretical value. The applicability of the natNi(d,x)56,57,58Co and natNi(p,x)57Ni, 57Co reaction products for thin layer activation (TLA) was investigated. The production rate of 55Co was compared for proton and deuteron induced reactions on Ni. The udexcitation functions of the 54Fe(d,n)55Co, 56Fe(p,2n)55Co and 58Ni(p,?)55Co reactions were analyzed with relevance to the production of the ?+-emitter 55Co (T½ = 17.53 h), a promising cobalt radionuclide for positron emission tomography (PET). The nuclear model codes ALICE-IPPE, EMPIRE and TALYS were used to check the consistency of the experimental data of those three production reactions. The statistically fitted excitation functions were employed to calculate the integral yields. The amounts of the impurities 56Co and 57Co were assessed. The significance of nuclear data in production of high-purity radionuclides is discussed.