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Different aspects of nuclear structure and reaction mechanisms in the collision 13N + 11B

par Di Pietro, Alessia;Neal, R.;Bradfield-Smith, W.;Davinson, Thomas;Irvine, R F;Mackenzie, Jim;Shotter, Alan C.;Woods, Ph P.J.;Figuera, Pierpaolo Paolo;Amorini, Francesca;Cabibbo, M.;Emmi, A.;Musumarra, Agatino;Pappalardo, Giuseppe;Rizzo, Francesca;Tudisco, Salvatore;Sükösd, Cs;Binon, Freddy ;Duhamel, Paul ;Vanhorenbeeck, Jean ;Cardella, Giuseppe;Papa, Massimo;Coszach, R.;Leleux, Pierre ;Ninane, A.
Référence Nuclear physics. A, 689, 3-4, page (668-690)
Publication Publié, 2001-07

Article révisé par les pairs

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Résumé :

The reaction 13N+11B has been investigated at two 13N beam energies: 29.5 and 45 MeV. Charged particles and γ rays emitted in the reactions have been detected using a large array of silicon strip detectors and BaF2 scintillators, respectively. Several reaction channels have been analysed with different aims. The proton transfer reaction 11B(13N, 12C)12C to various excited states of 12C has been studied to obtain information on the 13Ng.s. structure. The excitation energy of the 24Mg compound nucleus was in the region where several resonances occur in the 12C+12C system. The six-α decay of the 24Mg intermediate system has been studied. Some of these events have been identified as coming from the break-up of two 12C* in the 3-1-3-1 and 3-1-0+2 states. The total fusion cross section has also been extracted from the data. In order to extract information on the isospin purity/mixing in 24Mg at high excitation energy (Ex∼47 MeV), the GDR γ emission from this self-conjugate nucleus has been studied. A comparison of γ spectra has been undertaken for the reactions 13N+11B and 14N+10B. © 2001 Elsevier Science B.V.