C12+C12 Fusion Reactions near the Gamow Energy

T. Spillane, F. Raiola, C. Rolfs, D. Schürmann, F. Strieder, S. Zeng, H.-W. Becker, C. Bordeanu, L. Gialanella, M. Romano, and J. Schweitzer
Phys. Rev. Lett. 98, 122501 – Published 21 March 2007

Abstract

The fusion reactions C12(C12,α)Ne20 and C12(C12,p)Na23 have been studied from E=2.10 to 4.75 MeV by γ-ray spectroscopy using a C target with ultralow hydrogen contamination. The deduced astrophysical S(E)* factor exhibits new resonances at E3.0MeV, in particular, a strong resonance at E=2.14MeV, which lies at the high-energy tail of the Gamow peak. The resonance increases the present nonresonant reaction rate of the α channel by a factor of 5 near T=8×108K. Because of the resonance structure, extrapolation to the Gamow energy EG=1.5MeV is quite uncertain. An experimental approach based on an underground accelerator placed in a salt mine in combination with a high efficiency detection setup could provide data over the full EG energy range.

  • Figure
  • Figure
  • Figure
  • Figure
  • Received 8 November 2006

DOI:https://doi.org/10.1103/PhysRevLett.98.122501

©2007 American Physical Society

Authors & Affiliations

T. Spillane

  • University of Connecticut, Storrs, Connecticut, USA and Institut für Experimentalphysik III, Ruhr-Universität Bochum, Germany

F. Raiola, C. Rolfs, D. Schürmann, and F. Strieder*

  • Institut für Experimentalphysik III, Ruhr-Universität Bochum, Germany

S. Zeng

  • China Institute of Atomic Energy, Beijing, China

H.-W. Becker

  • Fakultät für Physik und Astronomie, Ruhr-Universität Bochum, Germany

C. Bordeanu

  • HH-NIPNE, Bukarest, Romania

L. Gialanella and M. Romano

  • Dipartimento di Scienze Fisiche, Università Federico II, Napoli and INFN, Napoli, Italy

J. Schweitzer

  • University of Connecticut, Storrs, Connecticut, USA

  • *Electronic address: strieder@ep3.rub.de

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 98, Iss. 12 — 23 March 2007

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 Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×