No evidence of an 11.16 MeV 2+ state in 12C

F. D. Smit; F. Nemulodi; Z. Buthelezi; J. Carter; R. W. Fearick; S. V. Förtsch; M. Freer; H. Fujita; M. Jingo; C. O. Kureba; J. Mabiala; J. Mira; R. Neveling; P. Papka; G. F. Steyn; J. A. Swartz; I. T. Usman; J. J. Van Zyl

doi:10.1103/PhysRevC.86.037301

No evidence of an 11.16 MeV 2⁺ state in 12C

F. D. Smit, F. Nemulodi, Z. Buthelezi, J. Carter, R. W. Fearick, S. V. Förtsch, M. Freer, H. Fujita, M. Jingo, C. O. Kureba, J. Mabiala, J. Mira, R. Neveling, P. Papka, G. F. Steyn, J. A. Swartz, I. T. Usman, J. J. Van Zyl

Physics & Astronomy

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

21 Citations (Scopus)

Abstract

An experiment using the 11B(3He,d)12C reaction was performed at iThemba LABS at an incident energy of 44 MeV and analyzed with a high energy-resolution magnetic spectrometer, to reinvestigate states in 12C published in 1971. The original investigation reported the existence of an 11.16 MeV state in 12C that displays a 2⁺ nature. In the present experiment, data were acquired at laboratory angles of 25, 30,and 35, which is part of the center-of-mass (c.m.) angle range in the original measurements where a clear signature of such a state was observed. These new low-background measurements revealed no evidence of the previously reported state at 11.16 MeV in 12C.

Original language	English
Article number	037301
Journal	Physical Review C - Nuclear Physics
Volume	86
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevC.86.037301
Publication status	Published - Sept 17 2012

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1103/PhysRevC.86.037301

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Smit, F. D., Nemulodi, F., Buthelezi, Z., Carter, J., Fearick, R. W., Förtsch, S. V., Freer, M., Fujita, H., Jingo, M., Kureba, C. O., Mabiala, J., Mira, J., Neveling, R., Papka, P., Steyn, G. F., Swartz, J. A., Usman, I. T., & Van Zyl, J. J. (2012). No evidence of an 11.16 MeV 2⁺ state in 12C. Physical Review C - Nuclear Physics, 86(3), [037301]. https://doi.org/10.1103/PhysRevC.86.037301

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abstract = "An experiment using the 11B(3He,d)12C reaction was performed at iThemba LABS at an incident energy of 44 MeV and analyzed with a high energy-resolution magnetic spectrometer, to reinvestigate states in 12C published in 1971. The original investigation reported the existence of an 11.16 MeV state in 12C that displays a 2+ nature. In the present experiment, data were acquired at laboratory angles of 25, 30,and 35, which is part of the center-of-mass (c.m.) angle range in the original measurements where a clear signature of such a state was observed. These new low-background measurements revealed no evidence of the previously reported state at 11.16 MeV in 12C.",

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AU - Smit, F. D.

AU - Nemulodi, F.

AU - Buthelezi, Z.

AU - Carter, J.

AU - Fearick, R. W.

AU - Förtsch, S. V.

AU - Freer, M.

AU - Fujita, H.

AU - Jingo, M.

AU - Kureba, C. O.

AU - Mabiala, J.

AU - Mira, J.

AU - Neveling, R.

AU - Papka, P.

AU - Steyn, G. F.

AU - Swartz, J. A.

AU - Usman, I. T.

AU - Van Zyl, J. J.

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No evidence of an 11.16 MeV 2⁺ state in 12C

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