Measurement of 59Co(n, x) reaction cross sections with the fast neutrons based on the 9Be(p, n) reaction *

초록

The cross sections of the Co-59(n, x) reaction in the average energy range of 15.2-37.2 MeV were measured using activation and an off-line gamma-ray spectrometric technique. The neutrons were generated from the Be-9(p, n) reaction with proton beam energies of 25-45 MeV at the MC-50 Cyclotron facility of the Korean Institute of Radiological and Medical Sciences (KIRAMS). Theoretical calculations of neutron-induced reactions on Co-59 were performed using the nuclear model code TALYS-1.9. The results for the Co-59(n, x) reactions were compared with the theoretical values obtained using TALYS-1.9 and the literature data provided in EXFOR and the TENDL 2019 nuclear data library. The theoretical values obtained using TALYS-1.9 with adjusted parameters are comparable to the experimental data. The measured reaction cross sections of a few radionuclides are new, and the others are comparable to the literature data, and thus, they can strengthen the database. The present study on cross sections leads to useful insight into the mechanisms of Co-59(n, x) reactions.

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