Overview of Neutron-Induced Cross-Section Measurements at ANNRI

Kimura, Atsushi   

Accurate neutron-induced cross-section data for minor actinides (MAs) and long-lived fission products (LLFPs) are essential for advanced nuclear reactor design, transmutation studies, and fuel-cycle evaluation. However, measurements are challenging due to sample radioactivity and scarcity. The Accurate Neutron-Nucleus Reaction measurement Instrument (ANNRI) was constructed in 2008 through a collaboration among Hokkaido University, Institute of Science Tokyo, and Japan Atomic Energy Agency. A series of measurements have been conducted to obtain neutron-induced cross-sections of MAs and LLFPs using high-intensity pulsed neutrons. Capture and/or total cross sections of Cm, Cm, Am, Am, Np, Tc, Pd, I, and many stable isotopes were reported. This presentation provides an overview of the ANNRI facility, experimental achievements, and ongoing efforts.