Abstract
Spallation reaction for the long-lived fission product 107Pd has been studied for the purpose of nuclear waste transmutation. The isotopic-distribution cross sections on both proton and deuteron were obtained at 118 MeV/nucleon in inverse kinematics at the RIKEN Radioactive Isotope Beam Factory. A large cross-section difference was found between the proton and deuteron results for the light-mass products. The data were compared with the SPACS semi-empirical parameterization and the PHITS calculations including both the intranuclear cascade and evaporation processes. In addition, the potential of spallation reaction for transmutation of 107Pd is discussed.
Highlights
The nuclear power is considered to be a potential candidate for the environmental sustainability in the economic activity
The management on the high-level radioactive waste (HLW) in the spent fuel produced from the nuclear power plant has received much attention
These light-mass products are probably produced by the central collision, where the production depends on the energy deposited
Summary
The nuclear power is considered to be a potential candidate for the environmental sustainability in the economic activity. The management on the high-level radioactive waste (HLW) in the spent fuel produced from the nuclear power plant has received much attention. One is long-lived fission products (LLFPs), and the other is minor actinides (MA) To reduce their high radioactivities and to make resource recycling from the spent fuel, research and development have been devoted to the partitioning and transmutation technology in recent years [1]. In order to obtain fundamental data for LLFP transmutation, systematic studies on spallation reactions on both proton and deuteron have been performed at RIKEN for various LLFP nuclei, such as 107Pd [3], 137Cs [4], 90Sr [4] and 93Zr [5]. The high-quality data obtained in the present work are critical to verify the spallation models as well as for a possible design on the LLFP transmutation system
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