Direct measurement of the O-16(alpha,gamma)Ne-20 reaction at E-c.m.=2.43 MeV and 1.69 MeV

U. Hager,L. Buchmann, B. Davids, J. Fallis, U. Greife, D. A. Hutcheon, D. Irvine,D. Ottewell,A. Rojas, S. Reeve,C. Ruiz

PHYSICAL REVIEW C（2012）

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摘要

In stars, O-16 represents the endpoint of the helium burning sequence due to the low rate of O-16(alpha,gamma)Ne-20. We present a new direct measurement of the total cross section of O-16(alpha,gamma)Ne-20 at E-c.m. = 1.69MeV employing the DRAGON recoil separator. In addition, the branching ratios and strength of the E-c.m. = 2.426 MeV 3(-) resonance were determined.

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