Measurement of the O17(p,α)N14 Cross Section at Stellar Energies

J. C. Blackmon, A. E. Champagne, M. A. Hofstee, M. S. Smith, R. G. Downing, and G. P. Lamaze
Phys. Rev. Lett. 74, 2642 – Published 3 April 1995
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Abstract

The cross section for the astrophysically important O17(p,α)N14 reaction was measured at proton energies of 75 and 65 keV. Thick, high-purity Ta2O5 targets (77% enriched O17) and large-area detectors were used with beam currents of 0.45 mA. Backgrounds were measured using Ta2O5 targets of natural isotopic composition. The expected resonance at Ep=70 keV was observed in the data taken at 75 keV, and its proton width was found to be 22±3stat±2target1beam+2 neV.

  • Received 2 December 1994

DOI:https://doi.org/10.1103/PhysRevLett.74.2642

©1995 American Physical Society

Authors & Affiliations

J. C. Blackmon, A. E. Champagne, and M. A. Hofstee

  • The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3255
  • and Triangle Universities Nuclear Laboratory, Durham, North Carolina 27088-0308

M. S. Smith

  • Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831

R. G. Downing and G. P. Lamaze

  • National Institute of Standards and Technology, Gaithersburg, Maryland 20899

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Issue

Vol. 74, Iss. 14 — 3 April 1995

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