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The nuclear structure of $^{32}$P

ORAL

Abstract

The $^{32}$P nucleus was populated through two separate experiments at the FSU Fox Laboratory using $^{26}$Mg($^{11}$B, $\alpha n$) and $^{18}$O($^{16}$O,$p n$) reactions both at E$_{lab}$ = 30 MeV. Subsequent $\gamma$ decays were observed with 3 or 4 Clover spectrometers. $\gamma$-$\gamma$ coincidences were sorted into symmetric matrices and analyzed by projections. From the preliminary analysis using both data sets, several gamma ray transitions from the previous work as proposed by Chakrabarti \textit{et. al}\footnote{R. Chakrabarti \textit{et al.}, PRC \textbf{84}, 054325 (2011).} can be confirmed, however some of gamma ray transitions proposed to populate the yrast J$^{\pi}$=5$^{-}$ state cannot be confirmed, as will be discussed. Furthermore, the observed states were then compared with the FSU \textit{psdpf} shell model calculations\footnote{R. S. Lubna \textit{et al.}, PRR \textbf{2}, 043342 (2020).}. The two highest level states from the previous work which were also observed in the present work agree relatively well with the FSU 2ph configurations suggesting that cross-shell excitation might have a role not only in describing the negative parity states for the nuclei in the \textit{sd} shell, but also in describing the high spin positive parity states.

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Authors

  • Catur Wibisono

    Florida State University

  • Samuel Tabor

    Florida State University

  • Vandana Tripathi

    Florida State University

  • Robert Grzywacz

    Moscow Institute of Physics and Technology, University of Virginia, California Institute of Technology, National High Magnetic Field Laboratory, University and Student Affairs; Oak Ridge Laboratory, Brookhaven National Laboratory, Physicist, Brookhaven National Laboratory, Oak Ridge National Laboratory, USA, Center for Nuclear Study, University of Tokyo, Advanced Science Research Center, Japan Atomic Energy Agency, Florida State University, Presidency University, Kolkata, INDIA, VECC,Kolkata, INDIA, SINP,Kolkata, INDIA, UGC-DAE CSR (Kolkata), INDIA, IFIN-HH, ELI-NP, Romania, Variable Energy Cyclotron Centre,Kolkata, INDIA, IEM, Kolkata, India, Victoria Institution (College), Kolkata, INDIA, Variable Energy Cyclotron Centre, Kolkata, INDIA, NHMFL; Florida State University, FAMU-FSU College of Engineering, Florida State University, Physics Department, Florida State University, Mississippi State University, NHMFL-FSU, U. Colorado at Boulder, NHMFL, University of Alabama at Birmingham, Oak Ridge National Laboratory, Argonne National Laboratory, Alabama School of Math and Science, University of South Alabama, University of Florida, University of Notre Dame, University of Texas at Dallas, Bob Jones University, University of Tennessee at Chattanooga, The Autonomous University of San Luis Potosí, Northern Arizona University, Flagstaff, AZ, Harvard-Smithsonian Center for Astrophysics, Cambridge, National Institute of Standards and Technology, Clemson University, University of South Florida, Phenikaa University, University of Ulsan, Ohio University, University of Hawaii, University of California, Davis, University of California, Davis., Saleh Research Centre, Department of Physics, Florida State university, Tallahassee, FL32306, USA, WestCHEM, School of Chemistry, University of Glasgow, Glasgow, G12 8QQ, UK, Professor, facility manager, Student, Florida State University(Former), Hebrew University, Israel \& Ioffe Institute, St.\ Petersburg, Russia, University of Tennessee, Knoxville

  • Caleb Benetti

    Florida State University

  • Alexander Volya

    Florida State University