Proton capture on S34 in the astrophysical energy regime of O-Ne novae

M. Lovely, A. Lennarz, D. Connolly, M. Williams, M. Alcorta, A. A. Chen, B. Davids, N. E. Esker, C. Fry, S. A. Gillespie, R. Giri, U. Greife, A. Hussein, D. Hutcheon, J. Karpesky, L. Kroll, J. Liang, P. D. O'Malley, S. Paneru, A. Psaltis, C. Ruiz, and A. C. Shotter (DRAGON Collaboration)
Phys. Rev. C 103, 055801 – Published 6 May 2021

Abstract

Nuclear reaction sensitivity studies have shown that the final isotopic abundance of O-Ne nova nucleosynthesis is dependent on the S34(p,γ)Cl35 reaction at astrophysical energies corresponding to peak nova burning temperatures of 0.1–0.4 GK. Isotopic ratios of the S, Cl, and Ar products are all used in various methods of cosmochemical analysis of presolar meteoritic grains. Due to the lack of direct experimental data, the S34+p reaction rate has been estimated using statistical modeling or information from indirect nucleon transfer experiments. In order to provide direct reaction information, the resonance strengths of several low energy resonances, Ec.m.=272495 keV, in the S34(p,γ)Cl35 reaction were measured for the first time in inverse kinematics using the DRAGON recoil separator located at TRIUMF, Canada's Particle Accelerator Centre in Vancouver.

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  • Received 7 December 2020
  • Accepted 13 April 2021

DOI:https://doi.org/10.1103/PhysRevC.103.055801

©2021 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

M. Lovely1, A. Lennarz2, D. Connolly2,3, M. Williams2,4, M. Alcorta2, A. A. Chen5, B. Davids2, N. E. Esker2, C. Fry6, S. A. Gillespie2, R. Giri7, U. Greife1,*, A. Hussein8, D. Hutcheon2, J. Karpesky1, L. Kroll5, J. Liang5, P. D. O'Malley9, S. Paneru7, A. Psaltis5, C. Ruiz2, and A. C. Shotter10 (DRAGON Collaboration)

  • 1Colorado School of Mines, Golden, Colorado 80401, USA
  • 2TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
  • 3Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
  • 4University of York, York YO10 5DD, United Kingdom
  • 5McMaster University, Hamilton, Ontario L8S 4L8, Canada
  • 6Michigan State University, East Lansing, Michigan 48824, USA
  • 7Ohio University, Athens, Ohio 45701, USA
  • 8University of Northern British Columbia, Prince George, British Columbia V2N 4Z9, Canada
  • 9University of Notre Dame, Notre Dame, Indiana 46556, USA
  • 10University of Edinburgh, Edinburgh EH9 3FD, United Kingdom

  • *ugreife@mines.edu

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Issue

Vol. 103, Iss. 5 — May 2021

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