Spectroscopy of 23Al and 27P using the (7Li,8He) reaction and the implications for 22Na and 26Al nucleosynthesis in explosive hydrogen burning

J. A. Caggiano, D. Bazin, W. Benenson, B. Davids, R. Ibbotson, H. Scheit, B. M. Sherrill, M. Steiner, J. Yurkon, A. F. Zeller, B. Blank, M. Chartier, J. Greene, J. A. Nolen, Jr., A. H. Wuosmaa, M. Bhattacharya, A. Garcia, and M. Wiescher
Phys. Rev. C 64, 025802 – Published 29 June 2001
PDFExport Citation

Abstract

The proton-rich nuclei 23Al and 27P were studied using the 24Mg(7Li,8He)23Al and 28Si(7Li,8He)27P reactions, respectively. Several energy levels are observed in each nucleus. The mass excess of 23Al was measured to be 6.773(28) MeV and the mass excess of 27P was measured to be 0.670(41)MeV. The first excited state of 23Al has been resolved from the ground state for the first time at an excitation energy of Ex=0.550(20)MeV. The first excited state of 27P has been measured for the first time at an excitation energy of Ex=1.199(19)MeV. The astrophysical implications of these results for the reaction rates of 22Mg(p,γ)23Al and 26Si(p,γ)27P for the nucleosynthesis of 22Na and 26Al in Ne novae will be discussed.

  • Received 11 July 2000

DOI:https://doi.org/10.1103/PhysRevC.64.025802

©2001 American Physical Society

Authors & Affiliations

J. A. Caggiano1,*, D. Bazin1, W. Benenson1, B. Davids1, R. Ibbotson1,†, H. Scheit1,‡, B. M. Sherrill1, M. Steiner1, J. Yurkon1, A. F. Zeller1, B. Blank2, M. Chartier1,5,§, J. Greene3, J. A. Nolen, Jr.3, A. H. Wuosmaa3, M. Bhattacharya4, A. Garcia4, and M. Wiescher4

  • 1National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824
  • 2Centre d’Etudes Nucléaires de Bordeaux-Gradignan, F-33175 Gradignan Cedex, France
  • 3Argonne National Laboratory, Argonne, Illinois 60439
  • 4University of Notre Dame, Notre Dame, Indiana 46556
  • 5Oak Ridge National Laboratory, P. O. Box 2008, Oak Ridge, Tennessee 37831-368

  • *Present address: Argonne National Laboratory, Argonne, IL 60439.
  • Present address: Brookhaven National Laboratory, Upton, NY 11973-5000.
  • Present address: Max-Planck-Institut für Kernphysik, Heidelberg, Germany.
  • §Present address: Centre d’Etudes Nucléaires de Bordeaux-Gradignan, F-33175 Gradignan Cedex, France.

References (Subscription Required)

Click to Expand
Issue

Vol. 64, Iss. 2 — August 2001

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review C

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×