Abstract.
The reaction 11 B + p has been used to populate the \((J^{\pi},T) = (2^{+},1)\) state at an excitation energy of 16.11 MeV in 12C. The \(\gamma\)-decay to unbound states in 12C is identified from the analysis of the decay of the populated daughter states. Due to a new technique, \(\gamma\)-decay to the 10.8 MeV \( 1^{-}\) state is observed for the first time, and transitions to the 9.64 MeV (\(3^{-}\)) and 12.71 MeV (\(1^{+}\)) are confirmed. Unresolved transitions to natural parity strength at 10 MeV and 11.5-13 MeV are also observed. For all transitions partial widths are deduced.
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Laursen, K.L., Fynbo, H.O.U., Kirsebom, O.S. et al. Unbound states in 12C populated by \(\gamma\)-decay of the \((J^{\pi},T) = (2^{+},1)\) 16.11 MeV state. Eur. Phys. J. A 52, 370 (2016). https://doi.org/10.1140/epja/i2016-16370-0
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DOI: https://doi.org/10.1140/epja/i2016-16370-0