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

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 re-investigate states in 12C published in 1971. The original investigation reported the existence of an 11.16 MeV state in...

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Bibliographic Details
Main Authors:	Smit, F. D, Nemulodi, F, Buthelezi, Z, Carter, J, Fearick, R. F, Foertsch, 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
Format:	Journal Article
Language:	English
Published:	19-06-2012
Subjects:	Physics - Nuclear Experiment
Online Access:	Get full text
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Summary:	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 re-investigate 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- degrees, to be as close to the c.m. angles of the original measurements where the clearest 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.
DOI:	10.48550/arxiv.1206.4217