The Proton and Neutron Quadrupole Collectivity in <sup>32</sup>Si

ORAL

Abstract

The collective excitation is an important characteristic of nuclear structure. Proton and neutron collectivity are the same in most of stable nuclei; however, it has been found out that this can be broken for some of nuclei around magic number, such as 16C and 38Si. In this work, we investigate the collective property in the ground state of 32Si, which has Z=14 semi-magic number and N=18 close to magic number 20, by 32Si (d, d') reaction in inverse kinematics.

The experiment was performed at RI beam facility (EN course) RCNP. The 32Si beam at the average energy of 18.5 AMeV bombarded a solid deuterium target. The final states of 32Si were selected from the measurement of de-excitation γ rays using Clover Ge detector array CAGRA, in coincidence with the scattered 32Si identified by ΔE-E method using Silicon telescope. The quadrupole collectivity was deduced from the angular distribution of differential cross section of the (d, d') reaction to the first 2+ state. By combining with proton quadrupole collectivity deduced from the known B(E2) value, proton  and neutron quadrupole parameters were determined separately.

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Presenters

  • Thi Ha Hoang

    • RCNP, Osaka Univ.
    • RCNP, Osaka University
    • Research Center for Nuclear Physics, Osaka University

Authors

  • Thi Ha Hoang

    • RCNP, Osaka Univ.
    • RCNP, Osaka University
    • Research Center for Nuclear Physics, Osaka University

  • Tetsuya Yamamoto

    • RCNP, Osaka Univ.

  • Nori Aoi

    • RCNP, Osaka Univ.
    • RCNP, Osaka University
    • Research Center for Nuclear Physics, Osaka University
    • RCNP Osaka University
    • RCNP, Osaka Uni., Japan

  • Eiji Ideguchi

    • RCNP, Osaka Univ.
    • RCNP, Osaka University
    • Research Center for Nuclear Physics, Osaka University

  • Hooi Jin Ong

    • RCNP, Osaka University
    • RCNP, Osaka Univ.
    • RCNP, Osaka Uni., Japan

  • Shumpei Noji

    • Research Center for Nuclear Physics, Osaka University
    • RCNP, Osaka Univ.

  • T. Leung Tang

    • RCNP, Osaka Univ.

  • Yasutaka Yamamoto

    • RCNP, Osaka Univ.
    • RCNP, Osaka University
    • Research Center for Nuclear Physics, Osaka University

  • Yongde Fang

    • Research Center for Nuclear Physics, Osaka University
    • RCNP, Osaka Univ.

  • Dinh Trong Tran

    • RCNP, Osaka Univ.
    • RCNP, Osaka University
    • RCNP, Osaka Uni., Japan

  • Yohei Matsuda

    • RCNP, Osaka Univ.

  • Nobu Imai

    • Center for Nuclear Study, the University of Tokyo
    • CNS, Univ. of Tokyo
    • Center for Nuclear Study, University of Tokyo
    • CNS, the University of Tokyo

  • Shin'ichiro Michimasa

    • Center for Nuclear Study, the University of Tokyo
    • Center for Nuclear Study, University of Tokyo
    • CNS, Univ. of Tokyo
    • CNS, University of Tokyo

  • Takashi Hashimoto

    • RCNP, Osaka Univ.

  • Jenny Lee

    • Riken Nishina Center

  • Junki Tanaka

    • RCNP, Osaka Univ.

  • Yassid Yayyad

    • RCNP, Osaka Univ.

  • Takeshi Ito

    • RCNP, Osaka Univ.

  • Tomokazu Suzuki

    • RCNP, Osaka University
    • RCNP, Osaka Univ.

  • Azusa Inoue

    • RCNP, Osaka Univ.
    • RCNP (Osaka University)
    • RCNP, Osaka University
    • Research Center for Nuclear Physics, Osaka University

  • Taras Lokotko

    • Hongkong Univ.