8Be  + 8Be  and 12C  + α breakup states in 16O populated via the 13C (4He ,4α)n reaction

Neil Curtis; S. Almaraz-Calderon; A. Aprahamian; N. I. Ashwood; M. Barr; B. Bucher; P. Copp; M. Couder; X. Fang; M. Freer; G. Goldring; F. Jung; S. R. Lesher; W. Lu; J. D. Malcolm; A. Roberts; W. P. Tan; C. Wheldon; V. A. Ziman

doi:10.1103/PhysRevC.94.034313

⁸Be + ⁸Be and ¹²C + α breakup states in ¹⁶O populated via the ¹³C (⁴He ,4α)n reaction

Neil Curtis^*, S. Almaraz-Calderon, A. Aprahamian, N. I. Ashwood, M. Barr, B. Bucher, P. Copp, M. Couder, X. Fang, M. Freer, G. Goldring, F. Jung, S. R. Lesher, W. Lu, J. D. Malcolm, A. Roberts, W. P. Tan, C. Wheldon, V. A. Ziman

^*Corresponding author for this work

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Abstract

The C13(He4,4α)n breakup reaction has been studied at beam energies of 27.0, 27.5, and 28.0 MeV. A comparison with previous measurements of the C12(He4,Be8)Be8 excitation function and C12(O16,4α)C12 breakup channel suggests the Begs8+Begs8 decay of O16 is observed from a possible 2+ state at 17.3±0.2 MeV, a 4+ state at 18.0±0.2 MeV, a 2+ or 4+ state at 19.4±0.2 MeV, and a 4+ or 6+ state at 21.0±0.2 MeV. The 2+ or 4+ assignment for the (19.4±0.2)-MeV state appears to be supported by the relative cross sections expected for resonant and sequential breakup reactions.

Original language	English
Article number	034313
Journal	Physical Review C
Volume	94
Issue number	3
Early online date	13 Sept 2016
DOIs	https://doi.org/10.1103/PhysRevC.94.034313
Publication status	Published - 13 Sept 2016

ASJC Scopus subject areas

Nuclear and High Energy Physics

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AAM_Physical_Review_C
©2016 American Physical Society. Publisher version can be found at: https://doi.org/10.1103/PhysRevC.94.034313
Accepted author manuscript, 337 KBLicence: None: All rights reserved

Birmingham Nuclear Physics Group Consolidated Grant
Jones, P., Evans, P., Freer, M. & Wheldon, C.
SCIENCE & TECHNOLOGY FACILITIES COUNCIL
1/08/14 → 30/09/18
Project: Research Councils
Birmingham Nuclear Physics Consolidated Grant
Freer, M., Evans, P., Jones, P., Wheldon, C. & Lazzeroni, C.
SCIENCE & TECHNOLOGY FACILITIES COUNCIL
1/08/11 → 31/07/14
Project: Research Councils
Nuclear Structure, Astrophysics and Reactions (NuSTAR) at FAIR
Freer, M. & Tungate, G.
SCIENCE & TECHNOLOGY FACILITIES COUNCIL
1/07/09 → 31/03/15
Project: Research Councils
Advanced Fellowship - Dr Carl Wheldon
Wheldon, C.
SCIENCE & TECHNOLOGY FACILITIES COUNCIL
29/10/07 → 28/10/12
Project: Research

Cite this

Curtis, N., Almaraz-Calderon, S., Aprahamian, A., Ashwood, N. I., Barr, M., Bucher, B., Copp, P., Couder, M., Fang, X., Freer, M., Goldring, G., Jung, F., Lesher, S. R., Lu, W., Malcolm, J. D., Roberts, A., Tan, W. P., Wheldon, C., & Ziman, V. A. (2016). ⁸Be + ⁸Be and ¹²C + α breakup states in ¹⁶O populated via the ¹³C (⁴He ,4α)n reaction. Physical Review C, 94(3), Article 034313. https://doi.org/10.1103/PhysRevC.94.034313

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title = "8Be + 8Be and 12C + α breakup states in 16O populated via the 13C (4He ,4α)n reaction",

abstract = "The C13(He4,4α)n breakup reaction has been studied at beam energies of 27.0, 27.5, and 28.0 MeV. A comparison with previous measurements of the C12(He4,Be8)Be8 excitation function and C12(O16,4α)C12 breakup channel suggests the Begs8+Begs8 decay of O16 is observed from a possible 2+ state at 17.3±0.2 MeV, a 4+ state at 18.0±0.2 MeV, a 2+ or 4+ state at 19.4±0.2 MeV, and a 4+ or 6+ state at 21.0±0.2 MeV. The 2+ or 4+ assignment for the (19.4±0.2)-MeV state appears to be supported by the relative cross sections expected for resonant and sequential breakup reactions.",

author = "Neil Curtis and S. Almaraz-Calderon and A. Aprahamian and Ashwood, {N. I.} and M. Barr and B. Bucher and P. Copp and M. Couder and X. Fang and M. Freer and G. Goldring and F. Jung and Lesher, {S. R.} and W. Lu and Malcolm, {J. D.} and A. Roberts and Tan, {W. P.} and C. Wheldon and Ziman, {V. A.}",

year = "2016",

month = sep,

day = "13",

doi = "10.1103/PhysRevC.94.034313",

language = "English",

volume = "94",

journal = "Physical Review C",

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Curtis, N, Almaraz-Calderon, S, Aprahamian, A, Ashwood, NI, Barr, M, Bucher, B, Copp, P, Couder, M, Fang, X, Freer, M, Goldring, G, Jung, F, Lesher, SR, Lu, W, Malcolm, JD, Roberts, A, Tan, WP, Wheldon, C & Ziman, VA 2016, '⁸Be + ⁸Be and ¹²C + α breakup states in ¹⁶O populated via the ¹³C (⁴He ,4α)n reaction', Physical Review C, vol. 94, no. 3, 034313. https://doi.org/10.1103/PhysRevC.94.034313

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T1 - 8Be + 8Be and 12C + α breakup states in 16O populated via the 13C (4He ,4α)n reaction

AU - Curtis, Neil

AU - Almaraz-Calderon, S.

AU - Aprahamian, A.

AU - Ashwood, N. I.

AU - Barr, M.

AU - Bucher, B.

AU - Copp, P.

AU - Couder, M.

AU - Fang, X.

AU - Freer, M.

AU - Goldring, G.

AU - Jung, F.

AU - Lesher, S. R.

AU - Lu, W.

AU - Malcolm, J. D.

AU - Roberts, A.

AU - Tan, W. P.

AU - Wheldon, C.

AU - Ziman, V. A.

PY - 2016/9/13

Y1 - 2016/9/13

N2 - The C13(He4,4α)n breakup reaction has been studied at beam energies of 27.0, 27.5, and 28.0 MeV. A comparison with previous measurements of the C12(He4,Be8)Be8 excitation function and C12(O16,4α)C12 breakup channel suggests the Begs8+Begs8 decay of O16 is observed from a possible 2+ state at 17.3±0.2 MeV, a 4+ state at 18.0±0.2 MeV, a 2+ or 4+ state at 19.4±0.2 MeV, and a 4+ or 6+ state at 21.0±0.2 MeV. The 2+ or 4+ assignment for the (19.4±0.2)-MeV state appears to be supported by the relative cross sections expected for resonant and sequential breakup reactions.

AB - The C13(He4,4α)n breakup reaction has been studied at beam energies of 27.0, 27.5, and 28.0 MeV. A comparison with previous measurements of the C12(He4,Be8)Be8 excitation function and C12(O16,4α)C12 breakup channel suggests the Begs8+Begs8 decay of O16 is observed from a possible 2+ state at 17.3±0.2 MeV, a 4+ state at 18.0±0.2 MeV, a 2+ or 4+ state at 19.4±0.2 MeV, and a 4+ or 6+ state at 21.0±0.2 MeV. The 2+ or 4+ assignment for the (19.4±0.2)-MeV state appears to be supported by the relative cross sections expected for resonant and sequential breakup reactions.

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8Be + 8Be and 12C + α breakup states in 16O populated via the 13C (4He ,4α)n reaction

Abstract

ASJC Scopus subject areas

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Projects

Birmingham Nuclear Physics Group Consolidated Grant

Birmingham Nuclear Physics Consolidated Grant

Nuclear Structure, Astrophysics and Reactions (NuSTAR) at FAIR

Advanced Fellowship - Dr Carl Wheldon

Cite this

⁸Be + ⁸Be and ¹²C + α breakup states in ¹⁶O populated via the ¹³C (⁴He ,4α)n reaction