Elsevier

Nuclear Physics

Volume 71, Issue 2, September 1965, Pages 343-347
Nuclear Physics

Search for a second state in Ne20 near 4.97 MeV

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Abstract

We have searched for a state in Ne20 which would form a doublet with the known 2 state at 4.97 MeV. Such a state is desired so that the observed stellar neon may be produced in the helium-burning stage of stellar evolution. Alpha spectra from the Na23(p, α)Ne20 reaction were analysed by a broad-range magnetic spectrograph but failed to show any evidence that the 4.97 MeV state is a doublet. The data place limitations on the relative energy and intensity of a second state near 4.97 MeV. Qualitatively, the spectra would be difficult to reconcile with a doublet separation greater than 15 keV. It is concluded that it is improbable that the 4.97 MeV state is a doublet; alternative modes of producing neon in ordinary states are mentioned.

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Work performed under the auspices of the U.S. Atomic Energy Commission.

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