Nuclear reaction study for long-lived fission products in high-level radioactive waste. Cross section measurements for proton- and deuteron-induced spallation reactions

Study on spallation reactions for the long-lived fission products ¹⁰⁷Pd, ¹³⁷Cs, and ⁹⁰Sr has been performed at the RIKEN Radioactive Isotope Beam Factory. Isotopic production cross sections on both proton and deuteron were obtained at around 100 and 200 MeV/u using the inverse kinematics technique. Both the target and energy dependence of cross sections have been investigated systematically. In the ¹⁰⁷Pd results, it was found that the deuteron-induced cross sections at 118 MeV/u are close to those for proton at 196 MeV/u for the light-mass products. The experimental data are compared with the PHITS calculations including both the intra-nuclear cascade and evaporation processes. (author)