Resonances in Unbound Systems from <sup>7</sup>Be reacting on Deuterium Gas in Inverse Kinematics

ORAL

Abstract

The inverse kinematic reactions of 7Be on a D2 gas target have advantages in measuring exotic reactions relevant to nuclear structure and nuclear astrophysics. For example, from a nuclear astrophysics’ perspective, the reaction 7Be(d,t)6Be provides access to resonances in the unbound nucleus 6Be, which are connected to the solar p-p chain. These could explain the overabundance predicted by the Big Bang Nucleosynthesis (BBN) model in the reaction 3He(3He,2p)4He, which competes with 3He(4He,γ)7Be in the p-p chain. In the nuclear structure aspect, unbound resonances in nuclei can decay sequentially or democratically and the angular correlation between emitted particles can inform us about the cluster structure of unbound systems. Using the Active Target Time Projection Chamber (AT-TPC), we can study the decay mechanisms of several channels: (d,p), (d,d), (d,t), and (d,³He). Among these, three lead to unbound systems: ⁶Be, ⁷Be*, and ⁸Be. These reactions allow simultaneous investigation of both the reaction dynamics and decay properties, which are captured and analyzed using clustering algorithms in the AT-TPC data analysis framework.

*This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics, under Award Number DE-SC0023633 (FRIB) and under Contract Number DE‐AC02‐06CH11357 (ATLAS). This research used resources of the Facility for Rare Isotope Beams and the Argonne Tandem Linac Accelerator System, both DOE Office of Science User Facilities.

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Presenters

  • Daniela Ramirez Chavez

    • Michigan State University / Facility for Rare Isotope Beams
    • Michigan State University

Authors

  • Daniela Ramirez Chavez

    • Michigan State University / Facility for Rare Isotope Beams
    • Michigan State University

  • Daniel Bazin

    • Michigan State University

  • Juan C Zamora

    • FRIB

  • Valdir Guimaraes

    • University of Sao Paulo

  • Yassid Ayyad

    • USC/IGFAE
    • Universidade de Santiago de Compostela

  • Tan Ahn

    • University of Notre Dame

  • Melina Avila

    • Argonne National Laboratory

  • Daniel W Bardayan

    • University of Notre Dame

  • Cristina Cabo

    • Universidade de Santiago de Compostela

  • Kyungyuk Chae

    • Sungkyunkwan University

  • Jie Chen

    • Southern University of Science and Technology

  • Bea Fernandez-Dominguez

    • USC/IGFAE
    • Universidad de Santiago de Compostela

  • Simon Giraud

    • Michigan State University

  • Benjamin P Kay

    • Argonne National Laboratory

  • Jesus Lubian

    • Universidade Federal Fluminense

  • Juan Lois Fuentes

    • FRIB
    • Facility for Rare Isotope Beams

  • Wolfgang Mittig

    • National Superconducting Cyclotron Laboratory

  • Zarif M Rahman

    • Facility for Rare Isotope Beams

  • Zach M Serikow

    • Facility for Rare Isotope Beams

  • Nathan Turi

    • FRIB/Michigan State University

  • Remco G.T. Zegers

    • Michigan State University/FRIB
    • Facility for Rare Isotope Beams; Department of Physics and Astronomy, Michigan State University

  • Magdalena Kuich

    • Michigan State University

  • Sk Mustak Ali

    • FRIB

  • Sunghan Bae

    • Institute for Basic Studies / Center for Exotic Nuclear Studies

  • Calem R Hoffman

    • Argonne National Laboratory

  • Saul Beceiro-Novo

    • Michigan State University