First Experimental Limit on the Ne19(p,γ)Na20 Resonance Strength, of Astrophysical Interest

R. D. Page et al.
Phys. Rev. Lett. 73, 3066 – Published 5 December 1994
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Abstract

The Ne19(p,γ)Na20 reaction may influence considerably the reaction flow between the CNO and NeNa mass regions in high temperature hydrogen burning conditions. The 447 keV resonance has been studied by exploiting radioactive Ne19 beams with novel detection techniques to measure β+ -delayed α radioactivity of Na20 nuclei produced in reactions with polyethylene targets. A 90% C.L. upper limit of 18 meV for the resonance strength has been determined and implications for the spin assignment of the 2.646 MeV state in Na20 and the stellar reaction rate are discussed.

  • Received 18 August 1994

DOI:https://doi.org/10.1103/PhysRevLett.73.3066

©1994 American Physical Society

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Vol. 73, Iss. 23 — 5 December 1994

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