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. Soić; J. S. Thomas; C. Wheldon; G. Wilson; V. A. Ziman

doi:10.1103/PhysRevC.85.014304

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. SoićJ. S. Thomas, C. Wheldon, G. Wilson, V. A. Ziman

Nuclear Structure and Nuclear Astrophysi

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Abstract

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 E _x ⁽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.

Original language	English
Article number	014304
Journal	Physical Review C - Nuclear Physics
Volume	85
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevC.85.014304
State	Published - Jan 6 2012

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Freer, M., Achouri, N. L., Angulo, C., Ashwood, N. I., Bardayan, D. W., Brown, S., Catford, W. N., Chipps, K. A., Curtis, N., Demaret, P., Harlin, C., Laurent, B., Malcolm, J. D., Milin, M., Munoz-Britton, T., Orr, N. A., Pain, S. D., Price, D., Raabe, R., ... Ziman, V. A. (2012). Resonances in 11C observed in the 4He(7Be,α)7Be and 4He(7Be,p)10B reactions. Physical Review C - Nuclear Physics, 85(1), Article 014304. https://doi.org/10.1103/PhysRevC.85.014304

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

abstract = "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 E x (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.",

author = "M. Freer and Achouri, {N. L.} and C. Angulo and Ashwood, {N. I.} and Bardayan, {D. W.} and S. Brown and Catford, {W. N.} and Chipps, {K. A.} and N. Curtis and P. Demaret and C. Harlin and B. Laurent and Malcolm, {J. D.} and M. Milin and T. Munoz-Britton and Orr, {N. A.} and Pain, {S. D.} and D. Price and R. Raabe and N. Soi{\'c} and Thomas, {J. S.} and C. Wheldon and G. Wilson and Ziman, {V. A.}",

year = "2012",

month = jan,

day = "6",

doi = "10.1103/PhysRevC.85.014304",

language = "English",

volume = "85",

journal = "Physical Review C - Nuclear Physics",

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Freer, M, Achouri, NL, Angulo, C, Ashwood, NI, Bardayan, DW, Brown, S, Catford, WN, Chipps, KA, Curtis, N, Demaret, P, Harlin, C, Laurent, B, Malcolm, JD, Milin, M, Munoz-Britton, T, Orr, NA, Pain, SD, Price, D, Raabe, R, Soić, N, Thomas, JS, Wheldon, C, Wilson, G & Ziman, VA 2012, 'Resonances in 11C observed in the 4He(7Be,α)7Be and 4He(7Be,p)10B reactions', Physical Review C - Nuclear Physics, vol. 85, no. 1, 014304. https://doi.org/10.1103/PhysRevC.85.014304

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T1 - Resonances in 11C observed in the 4He(7Be,α)7Be and 4He(7Be,p)10B reactions

AU - Freer, M.

AU - Achouri, N. L.

AU - Angulo, C.

AU - Ashwood, N. I.

AU - Bardayan, D. W.

AU - Brown, S.

AU - Catford, W. N.

AU - Chipps, K. A.

AU - Curtis, N.

AU - Demaret, P.

AU - Harlin, C.

AU - Laurent, B.

AU - Malcolm, J. D.

AU - Milin, M.

AU - Munoz-Britton, T.

AU - Orr, N. A.

AU - Pain, S. D.

AU - Price, D.

AU - Raabe, R.

AU - Soić, N.

AU - Thomas, J. S.

AU - Wheldon, C.

AU - Wilson, G.

AU - Ziman, V. A.

PY - 2012/1/6

Y1 - 2012/1/6

N2 - 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 E x (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.

AB - 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 E x (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.

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VL - 85

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 1

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ER -

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

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