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Phys. Rev. C 76, 025802 (2007) [6 pages]

Experimental evidence for a natural parity state in 26Mg and its impact on the production of neutrons for the s process

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C. Ugalde*, A. E. Champagne, S. Daigle, C. Iliadis, R. Longland, J. R. Newton, and E. Osenbaugh-Stewart
Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27599, USA and Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA

J. A. Clark, C. Deibel, A. Parikh†, P. D. Parker, and C. Wrede
Wright Nuclear Structure Laboratory, Yale University, New Haven, Connecticut 06520, USA

Received 28 April 2007; published 9 August 2007

We have studied natural parity states in 26Mg via the 22Ne(6Li, d)26Mg reaction. Our method significantly improves the energy resolution of previous experiments and, as a result, we report the observation of a natural parity state in 26Mg. Possible spin-parity assignments are suggested on the basis of published γ-ray decay experiments. The stellar rate of the 22Ne(α,γ)26Mg reaction is reduced and may give rise to an increase in the production of s-process neutrons via the 22Ne(α,n)25Mg reaction.

© 2007 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.76.025802
DOI:
10.1103/PhysRevC.76.025802
PACS:
26.20.+f, 27.30.+t, 23.20.Lv, 25.70.Hi

*cugalde@unc.edu

†Current address: Departament de Física i Enginyeria Nuclear, Universitat Politécnica de Catalunya, Barcelona, Spain.

 
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