Neutron Spectroscopy of Low-Lying Resonances in $^{26}$Si via ($^{3}$He,n)

ORAL

Abstract

Spectroscopic information of low-lying resonant states in the proton-rich isotope $^{26}$Si is needed in order to understand various astrophysical scenarios. Final abundances of $^{26}$Al in novae are strongly dependent on the $^{25}$Al(p,$\gamma$)$^{26}$Si reaction-rate. The $^{25}$Al(p,$\gamma$)$^{26}$Si reaction also has implications in the rp-process occurring in novae and X-ray bursts. Additional information is needed to provide spin-parity assignments and to reduce the uncertainties in the partial widths of several low-lying states above the proton threshold in $^{26}$Si. A spectroscopy study of the low-lying resonance states in $^{26}$Si will be done at John D. Fox lab using neutron/gamma coincidence with the recently developed CATRiNA neutron detector and the FSU Clover gamma detector array at the sensitivity levels needed to constrain the astrophysical reaction rates. States in $^{26}$Si are populated via the $^{24}$Mg($^{3}$He,n)$^{26}$Si reaction at beam energies of 10 MeV. The CATRiNA array consists of 16 deuterated-benzene liquid scintillator detectors and uses the time-of-flight technique alongside pulse-height information is to extract neutron energies. In this work, we povide neutron information obtained with the CATRiNA detector.

*This work was supported by the Stewardship Science Academic Alliance through the CENTAUR Center of Excellence under grant no. DE-NA0003841, the National Science Foundation under grant no. PHY- 1712953 and the State of Florida.

Authors

  • Jesus Perello

    • Florida State University
  • Sergio Almaraz-Calderon

    • Florida State University
  • Benjamin Asher

    • Florida State University
  • Nathan Gerken

    • Florida State University
  • Eilens Lopez

    • Florida State University
  • Ashton Morelock

    • Florida State University
  • Lagy Baby

    • Florida State University