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Extraction of proton and neutron skins in <sup>9,16</sup>C from proton elastic scattering at 300 MeV/nucleon

ORAL

Abstract

Proton elastic scattering in the intermediate energy region is one of the most suitable methods to obtain the fundamental quantities of nuclei, such as radius and density distribution. To apply this method to unstable nuclei, we have launched the Elastic Scattering of Protons with Radioactive Ion Beams (ESPRI) project and constructed a recoil proton spectrometer (RPS). In the ESPRI project, we measured proton elastic scattering from carbon isotopes 9,16C at NIRS-HIMAC and RIKEN-RIBF, respectively. 9C and 16C are considered to have proton and neutron skins, respectively, and we aim to measure these skins in this study. The beam energy of unstable nuclei is about 300 MeV, and nucleons have the longest mean free path in nuclei, but there have been no experimental studies of unstable nuclei.

In this talk, I will show the measured angular distributions of proton elastic scattering differential cross sections. Because of the experimental difficulties associated with unstable nuclei, there is still some debate on how to extract information on the density distribution from the observed quantities. The method will be discussed and the radii of protons and neutrons extracted from the observed quantities will be reported.

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Presenters

  • Yohei Matsuda

    Konan University, Department of Physics, Konan University, Department of Physics, School of Science and Engineering, Konan University

Authors

  • Yohei Matsuda

    Konan University, Department of Physics, Konan University, Department of Physics, School of Science and Engineering, Konan University

  • Tatsuya Furuno

    Department of Physics, Osaka University, Department of Physics, School of Science, Osaka University, Depertment of Physics, Osaka University

  • Takahiro Kawabata

    Department of Physics, Osaka University, Department of Physics, School of Science, Osaka University, Osaka University, Depertment of Physics, Osaka University

  • Yukie Maeda

    Faculty of Engineering, University of Miyazaki, Miyazaki University

  • Hooi Jin Ong

    Institute of Modern Physics, Chinese Academy of Sciences

  • Shinsuke Ota

    Research Center for Nuclear Physics, Osaka University, RCNP, Osaka University

  • Hideaki Otsu

    RIKEN, RIKEN Nishina Center

  • Harutaka Sakaguchi

    RCNP, Research Center for Nuclear Physics, Osaka University, RCNP, Osaka University

  • Satoru Terashima

    School of Physics and Nuclear Energy Engineering, Beihang University, IMP

  • Tomohiro Uesaka

    RIKEN Nishina Center, RNC, RIKEN

  • Nobuhiro Yamazaki

    Faculty of Science and Engineering, Konan University, Konan University, Department of Physics, Konan University

  • Juzo Zenihiro

    Department of Physics, Kyoto University, Kyoto Univ, Kyoto University