Neutron-induced reaction cross-sections of natPd with the fast neutron based on the 9Be(p,n) reaction

초록

The flux-weighted average cross-sections of the Pd-nat(n,xn)Pd-109,Pd-101 and Pd-nat(n,pxn)Rh-105,Rh-106m reactions with the average neutron energies of 20.3-32.3 MeV were measured for the first time by using an activation and off-line gamma-ray spectrometric technique. The fast neutrons were generated by using the Be-9(p,n) reaction with the proton energies of 35- and 45-MeV from the MC-50 Cyclotron at the Korea Institute of Radiological and Medical Sciences (KIRAMS). The neutron spectra were simulated by using the computer code MCNPX 2.6.0, whereas the experimental neutron fluxes were measured by using the Al-27(n,alpha)Na-24 monitor reaction. Thus the experimentally obtained reaction cross-sections are for the spectrum neutron energies, which range from the threshold energy to 33.0 MeV and 42.8 MeV, respectively. The present data within the average neutron energy of 20.3-32.3 MeV and the literature data at lower energy were compared with the theoretically calculated values from the TENDL-2019 library and found to be in good agreement in most of the cases.

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