Isotope-production cross sections of residual nuclei in proton- and deuteron-induced reactions on 93Zr at 50 MeV/u

Keita Nakano,Hiroshi Suzuki,Satoshi Takeuchi,Masahiro Yasuda,Hiroyuki Takeda,Hiromi Sato,Ryohei Hosoda,Pär-Anders Söderström,Takeshi Saito,Hiroki Yamada,Junki Suwa,Yukinobu Watanabe,Sidong Chen,Takashi Nakamura,Xiaohui Sun,Ryo Nakajima,He Wang,A Hirayama ,T Isobe ,T Tomai ,A Saito ,Y Shimizu ,S Kawase ,D Suzuki ,H Sakuraï ,I Murray ,S Michimasa ,Y Maeda ,Y Kondo ,Y Togano ,S Kubono ,Satoshi Koyama ,S Shimoura ,N Fukuda ,T Ozaki ,P Doornenbal ,T Sumikama ,Satoshi Kawakami ,D S Ahn ,S Masuoka ,M L Cortés ,M Nııkura ,N Chiga ,H Otsu ,H Baba ,K Chikaato ,M Takechi ,Yoshiki Soudo,Kôichi Yoshida

doi:10.1051/epjconf/202023920006

Abstract

The isotope-production cross sections in p- and d-induced reactions on 93Zr at approximately 50 MeV/nucleon were measured by using the inverse-kinematics method at RIKEN RI Beam Factory. The measured data were compared with the previous experimental 93Zr + p, d at 105 and 209 MeV/nucleon data. This comparison represents that the isotopic distribution of production cross sections at 51 MeV p-induced reaction is appreciably different from those at 105 and 209 MeV. On the other hand, these three data sets show that the shape of isotopic distribution is similar in the case of the d-induced reaction. Also, the measured production cross sections were compared with the theoretical model calculations with Particle and Heavy Ion Transport code System (PHITS) version 3.10 in order to investigate the reproducibility of the models implemented in PHITS. The calculations well reproduced the experimental data even in such low incident energy, while several discrepancies were still seen as in the p- and d-induced reactions at 105 and 209 MeV/nucleon.

Highlights

The treatment of high-level radioactive waste (HLW) is one of the crucial issues concerning nuclear power generation
Nuclear transmutation has been proposed as a powerful tool to give a new option for the HLW disposal for the last several decades
The measured range of the cross section is restricted by the lower limit of measurable cross section and by the acceptance of ZeroDegree Spectrometer (ZDS)

Summary

Introduction

The treatment of high-level radioactive waste (HLW) is one of the crucial issues concerning nuclear power generation. Isotope-production cross sections in p- and d-induced reactions on 93Zr, which is a typical LLFP with its half-life of 1.5 × 106 years, have been measured at the reaction energies of 105 and 209 MeV/nucleon, and theoretical model analyses with the intra-nuclear cascade model and evaporation model have been performed so far [1, 2]. Isotope-production cross sections for 93Zr were measured at the reaction energy of approximately 50 MeV/nucleon using the inverse-kinematics method. The reaction products were identified at ZDS using a method similar to that for the secondary beam. The isotope-production cross section for each reaction product was derived from the yields of incident 93Zr beam and each isotope produced with each charge state by subtracting the contribution from beamline materials which can be estimated by the empty target runs

Results and Discussion

Energy dependence

Comparison with theoretical calculation

Conclusions