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The High Efficiency Total Absorption Spectrometer (HECTOR) and Correcting for Inconsistencies in \textsuperscript{27}Al(p,\(\gamma\))\textsuperscript{28}Si

POSTER

Abstract

The processes responsible for producing heavy nuclei in stellar environments, such as the p-process and s-process, are studied by measuring radiative capture reaction cross sections. The High Efficiency Total Absorption Spectrometer (HECTOR) is a tool for measuring these small cross sections using the \(\gamma\)-summing technique. In order to study the efficiency of HECTOR, resonance strengths of the \textsuperscript{27}Al(p,\(\gamma\))\textsuperscript{28}Si reaction measured with HECTOR were compared to results from previous literature. HECTOR's results yield higher resonance strengths than previous works indicate, which may be due to incomplete cascade and branching information used in their calculations. Using a simulation of HECTOR in Geant4, it is possible to quickly calculate and edit cascades for \textsuperscript{28}Si at different resonances. By editing the cascade inputs of the simulation to agree with HECTOR's experimental data, it may become clear where and why previous literature underestimates \textsuperscript{27}Al(p,\(\gamma\))\textsuperscript{28}Si resonance strengths.

Authors

  • Sean Kelly

    University of Notre Dame, Nuclear Science Lab, University of Notre Dame

  • A. Simon

    University of Notre Dame, Nuclear Science Lab, University of Notre Dame

  • Rebeka Kelmar

    University of Notre Dame, Nuclear Science Lab, University of Notre Dame

  • Orlando Olivas-Gomez

    University of Notre Dame, Nuclear Science Lab, University of Notre Dame

  • Craig Reingold

    University of Notre Dame, Nuclear Science Lab, University of Notre Dame

  • Alexander Dombos

    University of Notre Dame, Michigan State Univ, Nuclear Science Lab, University of Notre Dame

  • Patrick Millican

    Ohio State University, Nuclear Science Lab, University of Notre Dame

  • Jack Wurzer

    Nuclear Science Lab, University of Notre Dame

  • Tessa Klein

    Nuclear Science Lab, University of Notre Dame