Abstract
For the Accelerator-Driven nuclear transmutation System (ADS), nuclide production yield estimation in a lead-bismuth target is important to manage the target. However, experimental data of nuclide production yield by spallation and high-energy fission reactions are scarce. In order to obtain the experimental data, an experiment in J-PARC using natPb and 209Bi samples were carried out. The samples were thin foils with about 0.1 mm thick and 25 mm × 25 mm square and were irradiated with protons at kinematic energy points of 0.4GeV, 2.2GeV, and 3.0 GeV. After the irradiation, the nuclide production cross section was determined by spectroscopic measurement of decay gamma-rays from the samples with HPGe detectors. In this paper, 14 nuclide production cross sections for lead and bismuth were obtained. They were compared with the calculated cross sections with various models and the evaluated one.
Highlights
Accelerator-Driven nuclear transmutation System (ADS) transmutes minor actinides (MA) by supplying neutrons continuously
Neutrons are supplied by a spallation reaction of lead-bismuth eutectic (LBE) irradiated by 1.5 GeV energy protons, which is utilized as coolant
Beam profile measurement using an imaging plate (IP) was performed after irradiation to improve the accuracy of the beam position on the samples
Summary
Accelerator-Driven nuclear transmutation System (ADS) transmutes minor actinides (MA) by supplying neutrons continuously. Neutrons are supplied by a spallation reaction of lead-bismuth eutectic (LBE) irradiated by 1.5 GeV energy protons, which is utilized as coolant. For the estimation of the radioactive nuclides to treat wastes and evaluate the chemical effect of spallation products in the LBE, accurate cross section data are required. In this experiment, lead and bismuth samples were chosen, which are employed as a structural material or the spallation target. Stacked square metal samples were placed inside a vacuum chamber in the beam dump line. They were irradiated by proton beams having different energies of 0.4 GeV, 2.2 GeV, and 3.0 GeV. The details of the experiment and analysis procedure are described
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