First direct measurement of the total cross section of 12C(alpha,gamma)16O

Abstract

The total cross section of 12C(alpha,gamma)16O was measured for the first time by a direct and ungated detection of the 16O recoils. This measurement in inverse kinematics using the recoil mass separator ERNA in combination with a windowless He gas target allowed to collect data with high precision in the energy range E=1.9 to 4.9 MeV. The data represent new information for the determination of the astrophysical S(E) factor.

5 pages, 3 figures, 1 table, accepted for publication Eur.Phys.J. A (Online first available)

References in corpus (2)

• The chemical composition of White Dwarfs as a test of convective efficiency during core He-burning
• The 12C(alpha,gamma)16O Reaction Rate and the Evolution of Stars in the Mass Range 0.8 < M/M(sun) < 25

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