Breakup of C-12 resonances into three alpha particles

O. S. Kirsebom; M. Alcorta; M. J. G. Borge; M. Cubero; Christian Aaen Diget; R. Dominguez-Reyes; L. M. Fraile; B. R. Fulton; H. O. U. Fynbo; S. Hyldegaard; B. Jonson; M. Madurga; A. Munoz Martin; T. Nilsson; G. Nyman; A. Perea; K. Riisager; O. Tengblad

doi:10.1103/PhysRevC.81.064313

Breakup of C-12 resonances into three alpha particles

O. S. Kirsebom, M. Alcorta, M. J. G. Borge, M. Cubero, Christian Aaen Diget, R. Dominguez-Reyes, L. M. Fraile, B. R. Fulton, H. O. U. Fynbo, S. Hyldegaard, B. Jonson, M. Madurga, A. Munoz Martin, T. Nilsson, G. Nyman, A. Perea, K. Riisager, O. Tengblad

Physics

Research output: Contribution to journal › Article › peer-review

Abstract

The reaction He-3 + B-11 -> d + C-12* has been used to populate resonances in C-12 up to an excitation energy of 15 MeV. The subsequent breakup to three alpha particles has been measured in complete kinematics. Dalitz plots are used to visualize and analyze the data. The Dalitz plot intensity distribution exhibits zero points characteristic of the total spin and parity of the 3 alpha system allowing us to determine the spin and parity of a state in C-12 at 13.35 MeV whose quantum numbers were hitherto not well established. The Dalitz plot intensity distributions of the 2(-) state at 11.83 MeV and the 1(+) state at 12.71 MeV are compared with the predictions of a recent three-body calculation as well as with simpler models. All are able to reproduce the gross structures seen in the Dalitz plot, but none give an accurate description of the detailed profile of the distributions.

Original language	English
Article number	064313
Pages (from-to)	-
Number of pages	9
Journal	Physical Review C
Volume	81
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevC.81.064313
Publication status	Published - 18 Jun 2010

Keywords

FINAL-STATE
DECAY
NUCLEI
C12

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10.1103/PhysRevC.81.064313

http://prc.aps.org/abstract/PRC/v81/i6/e064313

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Kirsebom, O. S., Alcorta, M., Borge, M. J. G., Cubero, M., Diget, C. A., Dominguez-Reyes, R., Fraile, L. M., Fulton, B. R., Fynbo, H. O. U., Hyldegaard, S., Jonson, B., Madurga, M., Munoz Martin, A., Nilsson, T., Nyman, G., Perea, A., Riisager, K., & Tengblad, O. (2010). Breakup of C-12 resonances into three alpha particles. Physical Review C, 81(6), -. Article 064313. https://doi.org/10.1103/PhysRevC.81.064313

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title = "Breakup of C-12 resonances into three alpha particles",

abstract = "The reaction He-3 + B-11 -> d + C-12* has been used to populate resonances in C-12 up to an excitation energy of 15 MeV. The subsequent breakup to three alpha particles has been measured in complete kinematics. Dalitz plots are used to visualize and analyze the data. The Dalitz plot intensity distribution exhibits zero points characteristic of the total spin and parity of the 3 alpha system allowing us to determine the spin and parity of a state in C-12 at 13.35 MeV whose quantum numbers were hitherto not well established. The Dalitz plot intensity distributions of the 2(-) state at 11.83 MeV and the 1(+) state at 12.71 MeV are compared with the predictions of a recent three-body calculation as well as with simpler models. All are able to reproduce the gross structures seen in the Dalitz plot, but none give an accurate description of the detailed profile of the distributions.",

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author = "Kirsebom, {O. S.} and M. Alcorta and Borge, {M. J. G.} and M. Cubero and Diget, {Christian Aaen} and R. Dominguez-Reyes and Fraile, {L. M.} and Fulton, {B. R.} and Fynbo, {H. O. U.} and S. Hyldegaard and B. Jonson and M. Madurga and {Munoz Martin}, A. and T. Nilsson and G. Nyman and A. Perea and K. Riisager and O. Tengblad",

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doi = "10.1103/PhysRevC.81.064313",

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Kirsebom, OS, Alcorta, M, Borge, MJG, Cubero, M, Diget, CA, Dominguez-Reyes, R, Fraile, LM, Fulton, BR, Fynbo, HOU, Hyldegaard, S, Jonson, B, Madurga, M, Munoz Martin, A, Nilsson, T, Nyman, G, Perea, A, Riisager, K & Tengblad, O 2010, 'Breakup of C-12 resonances into three alpha particles', Physical Review C, vol. 81, no. 6, 064313, pp. -. https://doi.org/10.1103/PhysRevC.81.064313

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AU - Kirsebom, O. S.

AU - Alcorta, M.

AU - Borge, M. J. G.

AU - Cubero, M.

AU - Diget, Christian Aaen

AU - Dominguez-Reyes, R.

AU - Fraile, L. M.

AU - Fulton, B. R.

AU - Fynbo, H. O. U.

AU - Hyldegaard, S.

AU - Jonson, B.

AU - Madurga, M.

AU - Munoz Martin, A.

AU - Nilsson, T.

AU - Nyman, G.

AU - Perea, A.

AU - Riisager, K.

AU - Tengblad, O.

PY - 2010/6/18

Y1 - 2010/6/18

N2 - The reaction He-3 + B-11 -> d + C-12* has been used to populate resonances in C-12 up to an excitation energy of 15 MeV. The subsequent breakup to three alpha particles has been measured in complete kinematics. Dalitz plots are used to visualize and analyze the data. The Dalitz plot intensity distribution exhibits zero points characteristic of the total spin and parity of the 3 alpha system allowing us to determine the spin and parity of a state in C-12 at 13.35 MeV whose quantum numbers were hitherto not well established. The Dalitz plot intensity distributions of the 2(-) state at 11.83 MeV and the 1(+) state at 12.71 MeV are compared with the predictions of a recent three-body calculation as well as with simpler models. All are able to reproduce the gross structures seen in the Dalitz plot, but none give an accurate description of the detailed profile of the distributions.

AB - The reaction He-3 + B-11 -> d + C-12* has been used to populate resonances in C-12 up to an excitation energy of 15 MeV. The subsequent breakup to three alpha particles has been measured in complete kinematics. Dalitz plots are used to visualize and analyze the data. The Dalitz plot intensity distribution exhibits zero points characteristic of the total spin and parity of the 3 alpha system allowing us to determine the spin and parity of a state in C-12 at 13.35 MeV whose quantum numbers were hitherto not well established. The Dalitz plot intensity distributions of the 2(-) state at 11.83 MeV and the 1(+) state at 12.71 MeV are compared with the predictions of a recent three-body calculation as well as with simpler models. All are able to reproduce the gross structures seen in the Dalitz plot, but none give an accurate description of the detailed profile of the distributions.

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KW - DECAY

KW - NUCLEI

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VL - 81

SP - -

JO - Physical Review C

JF - Physical Review C

IS - 6

M1 - 064313

ER -

Breakup of C-12 resonances into three alpha particles

Abstract

Keywords

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