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arxiv: nucl-ex/0511050 · v1 · submitted 2005-11-29 · ⚛️ nucl-ex

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

D.Schuermann , A.Di Leva , L.Gialanella , D.Rogalla , F.Strieder , N.De Cesare , A.D'Onofrio , G.Imbriani
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R.Kunz C.Lubritto A.Ordine V.Roca C.Rolfs M.Romano F.Schuemann F.Terrasi H.-P.Trautvetter
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keywords alphacrossdatadirectfirstgammameasurementsection
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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.

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