Proton Capture on 34S in the Astrophysical Energy Regime

ORAL

Abstract

Novae are explosive astrophysical events which provide a unique environment for nucleosynthesis. Oxygen-Neon(O-Ne) novae caused by the thermonuclear runaway of accreted material on the white dwarf of a close binary system can reach peak temperatures of 0.1-0.4 GK. These novae are particularly important for the production of higher mass nuclides through complex reaction networks. Many of the resonance strengths in these networks have been theoretically calculated and lead to a large degree of uncertainty in the final production of the nova. One reaction of particular importance for these processes is the proton capture on 34S at energies relevant to nova nucleosynthesis. Previously, this reaction has been measured above Ecm=495 keV but here we will discuss the recent direct measurement conducted at DRAGON in inverse kinematics from Ecm=272 keV to 495 keV.

*The research presented was funded through the U.S. Department of Energy Office of Science.

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Authors

  • M. Lovely

    • Colorado Sch of Mines
    • Colorado Sch. of Mines

  • Devin Connolly

    • Los Alamos National Lab

  • Jonathan Karpesky

    • Colorado Sch of Mines

  • Stephen Gillespie

    • TRIUMF National Lab

  • Patrick O'malley

    • University of Notre Dame

  • A. Chen

    • McMaster University
    • McMaster U.

  • B. Davids

    • TRIUMF National Lab
    • TRIUMF

  • A. Lennarz

    • TRIUMF National Lab
    • TRIUMF

  • Alison Laird

    • University of York

  • C. Ruiz

    • TRIUMF National Lab
    • TRIUMF

  • D. Hutcheon

    • TRIUMF National Lab
    • TRIUMF

  • U. Greife

    • Colorado Sch of Mines
    • Colorado Sch. of Mines