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Phys. Rev. C 66, 022801(R) (2002) [3 pages]

Search for a resonance in the 14N(p,γ)15O reaction at Ep=127keV

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R. C. Runkle1,2, A. E. Champagne1,2, C. Fox1,2, C. Iliadis1,2, J. Pollanen1,2, A. Stephan1,2,3, and C. Westerfeldt2
1The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3255
2Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708-0308
3Institut für Physik mit Ionenstrahlen, Ruhr-Universität Bochum, D-44780 Bochum, Germany

Received 24 June 2002; published 29 August 2002

The 14N(p,γ)15O reaction regulates the energy produced by the CN cycle in main-sequence stars and in red giants. Recently, preliminary evidence was presented for a new resonance in this reaction, which would significantly increase the reaction rate for temperatures near 108K. We have attempted to confirm this result and find no indication of a resonance near Eplab=127keV. Our upper limit on its strength is ωγ<~32neV (95% C.L.), which is more than 2 orders of magnitude below the previously reported value.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.66.022801
DOI:
10.1103/PhysRevC.66.022801
PACS:
25.40.Lw, 26.20.+f, 27.20.+n
 
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