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

S Kawase ,Tatsuya Yamamoto,Tadahiro Kin,Sidong Chen,Takashi Nakamura,Takeshi Saito,Shouhei Araki,Yasushi Watanabe,Keita Nakano,Satoshi Takeuchi,Yoshinori Shiga ,S Kubono ,Satoshi Koyama ,H Sakuraï ,A Makinaga ,H Otsu ,Degbr Soon Ahn ,Takashi Matsuzaki ,Nobuygbri Chiga ,Naoki Fgbruda ,H Takeda ,Y Watanabe ,Y Togano ,Masanori Aikawa ,P Doornenbal ,P.-A Söderström ,M Kurokawa ,S Momiyama ,S Shimoura ,Shunsgbre Nagamine ,T Kubo ,T Sumikama ,T Ichihara ,A Saito ,S Michimasa ,K Wimmer ,Y Kondo ,M Nııkura ,Hiroshi Suzgbri ,Mizgbri Shikata ,Handing Wang ,M Matsushita ,T Ozaki ,Y Shimizu ,T Isobe ,Shunsgbre Kawakami ,R Taniuchi ,Y Maeda ,J Tsubota ,Kôichi Yoshida

doi:10.1051/epjconf/201714603012

Abstract

Isotopic production cross sections in the proton- and deuteron-induced spallation reactions on 93 Zr 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.

Highlights

Treatment of the long-lived fission products (LLFPs) produced in nuclear reactors has been an important issue because of the long-term risk in radioactive waste management
The isotopic production cross sections via the spallation reactions were obtained for the residual nuclei in the atomic number range from Nb (Z = 41) to Kr (Z = 36) by the above-mentioned data analysis
Isotopic production cross sections of the proton- and deuteron-induced spallation reactions on 93Zr at 105 MeV/u were measured in inverse kinematics condition

Summary

Introduction

Treatment of the long-lived fission products (LLFPs) produced in nuclear reactors has been an important issue because of the long-term risk in radioactive waste management. Despite the importance of 93Zr in the waste treatment due to its long lifetime, the experimental cross section data of the possible reactions in transmutation process are very scarce. We have applied the inversekinematics method to measurements of the isotopic production cross sections of the spallation reactions. In this method, the nuclide to be measured and the probe are the c The Authors, published by EDP Sciences. A new experiment was performed for the measurements of isotopic production cross sections on an LLFP nucleus 93Zr through the proton- and deuteron-induced spallation reactions. The experimental result on the isotopic production cross sections will be discussed in a comparison with theoretical model calculations

Experiment

Results and discussion

Summary and conclusions