Resonances in 11C observed in the 4He(7Be,α)7Be and 4He(7Be,p)10B reactions

M. Freer; N.L. Achouri; C. Angulo; N.I. Ashwood; D.W. Bardayan; S. Brown; W.N. Catford; K.A. Chipps; N. Curtis; P. Demaret; C. Harlin; B. Laurent; J.D. Malcolm; M. Milin; T. Munoz-Britton; N.A. Orr; S.D. Pain; D. Price; R. Raabe; N. Soic; J.S. Thomas; C. Wheldon; G. Wilson; V.A. Ziman

HAL : in2p3-00658279, version 1

DOI : 10.1103/PhysRevC.85.014304

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Physical Review C 85 (2012) 014304

Resonances in 11C observed in the 4He(7Be,α)7Be and 4He(7Be,p)10B reactions

M. Freer, N.L. Achouri¹, C. Angulo, N.I. Ashwood, D.W. Bardayan, S. Brown, W.N. Catford, K.A. Chipps, N. Curtis, P. Demaret, C. Harlin, B. Laurent¹, J.D. Malcolm, M. Milin, T. Munoz-Britton, N.A. Orr¹, S.D. Pain, D. Price, R. Raabe, N. Soic, J.S. Thomas, C. Wheldon, G. Wilson, V.A. Ziman

(2012)

Measurements of the 4He(7Be,α)7Be and 4He(7Be,p)10B reactions were performed using 7Be beam energies of 7.1 and 23 MeV and a helium-4 target, employing the thick target technique. Resonances were observed between Ex(11C)=8.6 to 13.8 MeV. An R-matrix analysis was performed to characterize the spins and partial widths. This analysis showed that the observed sequence of states was consistent with that found for 7Li + α resonant scattering populating resonances in 11B. A comparison of the proposed partial widths for decay with the Wigner limit indicates that several of the states are associated with cluster-like structures.

1 :	LPCC - Laboratoire de Physique Corpusculaire de Caen

équipe(s) de recherche : structure nucléaire

Thème(s)

Physique/Physique Nucléaire Expérimentale


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Soumis le : Mardi 10 Janvier 2012, 11:07:14
Dernière modification le : Jeudi 25 Avril 2013, 21:32:41