X iv : n uc l - ex / 0 41 00 36 v 1 2 5 O ct 2 00 4 1 Branching ratio measurements of the 7 . 12 - MeV state in 16
نویسندگان
چکیده
Knowledge of the γ-ray branching ratios of the 7.12-MeV state of 16 O is important for the extrapolation of the 12 C(α,γ) 16 O cross section to astrophysical energies. Ground state transitions provide most of the 12 C(α,γ) 16 O total cross section while cascade transitions have contributions of the order of 10-20%. Determining the 7.12 → 6.92-MeV branching ratio will also result in a better extrapolation of the cascade and E2 ground state cross section to low energies. We report here on measurements on the branching ratio of the 7.12 → 6.92-MeV transition in 16 O.
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