Properties of the 12C 10 MeV state determined through β-decay

Authors :: Diget, C.Aa.
Barker, F.C.
Borge, M.J.G.
Cederkäll, J.
Fedosseev, V.N.
Fraile, L.M.
Fulton, B.R.
Fynbo, H.O.U.
Jeppesen, H.B.
Jonson, B.
Köster, U.
Meister, M.
Nilsson, T.
Nyman, G.
Prezado, Y.
Riisager, K.
Rinta-Antila, S.
Tengblad, O.
Turrion, M.
Wilhelmsen, K.
Source :: Nuclear Physics A. Oct2005, Vol. 760 Issue 1/2, p3-18. 16p.
Publication Year :: 2005
Abstract: Abstract: The β-delayed triple-α particle decay of 12B has been measured with a setup that favours coincidence detection. A broad state in 12C, previously reported around 10 MeV, has been seen and its properties determined through R-matrix analysis of the excitation spectrum. The spin and parity are . Interference between this state and the Hoyle state at 7.654 MeV has a marked influence on the spectrum. The coupling between the two states makes it difficult to determine the resonance energy. [Copyright &y& Elsevier]