Cross section measurement of residues produced in proton- and deuteron-induced spallation reactions on ⁹³Zr at 105 MeV/u using the inverse kinematics method

¹ Department of Advanced Energy Engineering Sciences, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka 816-8580, Japan
² RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
³ Department of Physics, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro, Tokyo 152-8551, Japan
⁴ Department of Applied Physics, University of Miyazaki, 1-1 Gakuen Kibanadai-nishi, Miyazaki, Miyazaki 889-2192, Japan
⁵ Faculty of Science, Hokkaido University, Kita 8 Nishi 5, Kita, Sapporo, Hokkaido 060-0808, Japan
⁶ Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
⁷ Graduate School of Medicine, Hokkaido University, Kita 8 Nishi 5, Kita, Sapporo, Hokkaido 060-0808, Japan
⁸ JEin Institute for Fundamental Science, NPO Einstein, 5-14 Yoshida-hommachi, Sakyo, Kyoto 606-8317, Japan
⁹ Center for Nuclear Study, Unviersity of Tokyo, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
¹⁰ Department of Physics, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima, Tokyo 172-8501, Japan

^a e-mail: kawase@aees.kyushu-u.ac.jp

Published online: 13 September 2017

Abstract

Isotopic production cross sections in the proton- and deuteron-induced spallation reactions on ⁹³Zr at an energy of 105 MeV/u were measured in inverse kinematics conditions for the development of realistic nuclear transmutation processes for long-lived fission products (LLFPs) with neutron and light-ion beams. The experimental results were compared to the PHITS calculations describing the intra-nuclear cascade and evaporation processes. Although an overall agreement was obtained, a large overestimation of the production cross sections for the removal of a few nucleons was seen. A clear shell effect associated with the neutron magic number N = 50 was observed in the measured isotopic production yields of Zr and Y isotopes, which can be reproduced reasonably by the PHITS calculation.