Measurement of near-threshold proton branching ratios in $^{31}$S using $^{28}$Si($^6$Li,t)$^{31}$S(p)$^{30}$P

ORAL

Abstract

The $^{30}$P(p,$\gamma$) reaction is a key step in the nucleosynthesis of elements up to A=40 in models of ONe nova explosions. Prior studies involving particle and/or gamma-ray detection have constrained branching ratios and resonance strengths of a few states in $^{31}$S close to the proton threshold. However, similar information is lacking for a few other states with center-of-mass energy less than 600keV, which is important to determine the reaction rate. In this study, we used the reaction $^{28}$Si($^6$Li,t) to probe a few resonances in this region using the Super-Enge Split-Pole Spectrograph (SE-SPS) at the FSU . Proton decays from $^{31}$S states were detected in coincidence with tritons using the Silicon Array For Branching Ratio Experiments(SABRE). The experimental setup, preliminary results, and astrophysical implications will be discussed.

*This work was supported by FSU NSF Grant No. PHY-2012522, US Department Of Energy grants No. DE-SC0014231 and DE-FG02-96ER40978.

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Presenters

  • Balakrishnan Sudarsan

    • Louisiana State University
    • Louisiana State University, Baton Rouge, LA.

Authors

  • Balakrishnan Sudarsan

    • Louisiana State University
    • Louisiana State University, Baton Rouge, LA.

  • Kevin T Macon

    • Louisiana State University
    • Louisiana State University, Baton Rouge, LA.

  • Jeff C Blackmon

    • Louisiana State University, Baton Rouge, LA.
    • Louisiana State University

  • Catherine M Deibel

    • Louisiana State University
    • Louisiana State University, Baton Rouge, LA.

  • Keilah S Davis

    • Louisiana State University, Baton Rouge, LA.
    • Louisiana State University

  • William D Braverman

    • Louisiana State University, Baton Rouge, LA.
    • Louisiana State University

  • Erin C Good

    • FRIB
    • FRIB, East Lansing, MI.

  • David He

    • Louisiana State University, Baton Rouge, LA

  • Sergio Lopez

    • Louisiana State University
    • Louisiana State University, Baton Rouge, LA.

  • Rachel Malecek

    • Louisiana State University, Baton Rouge, LA.
    • Louisiana State University

  • Khang H Pham

    • Louisiana State University, Baton Rouge, LA.
    • Louisiana State University

  • Zach M Purcell

    • Louisiana State University, Baton Rouge, LA.
    • Louisiana State University

  • Gordon W McCann

    • Florida State University
    • Florida State University, Tallahassee, FL.

  • Kenneth G Hanselman

    • Florida State University
    • Florida State University, Tallahassee, FL.

  • Lagy T Baby

    • Florida State University
    • Florida State University, Tallahassee, FL.

  • Ingo L Wiedenhoever

    • Florida State University
    • Florida State University, Tallahassee, FL.

  • Samuel O Ajayi

    • Florida State University
    • Florida State University, Tallahassee, FL.

  • Benjamin W Asher

    • Florida State University
    • Florida State University, Tallahassee, FL.

  • Caleb Benetti

    • Florida State University
    • Florida State University, Tallahassee, FL.

  • Alex C Conley

    • Florida State University, Tallahassee, FL.

  • Chris J Esparza

    • Florida State University
    • Florida State University, Tallahassee, FL.

  • Bryan Kelly

    • Florida State University, Tallahassee, FL.
    • Florida State University

  • Ashton B Morelock

    • Florida State University
    • Florida State University, Tallahassee, FL.

  • Jesus F Perello

    • Florida State University
    • Florida State University, Tallahassee, FL.

  • Gary C Ragsdale

    • Florida State University, Tallahassee, FL.

  • Eilens L Lopez Saavedra

    • Florida State University
    • Florida State University, Tallahassee, FL.

  • Eli S Temanson

    • Florida State University, Tallahassee, FL.
    • Florida State University

  • Catur Wibisono

    • Florida State University
    • Florida State University, Tallahassee, FL.