C ð d ; p Þ 16 C Reaction and Exotic Behavior in 16 C

A.H. Wuosmaa, B. B. Back, S. Baker, B. A. Brown, C.M. Deibel, P. Fallon, C. R. Hoffman, B. P. Kay, H.Y. Lee, J. C. Lighthall, A. O. Macchiavelli, S. T. Marley, R. C. Pardo, K. E. Rehm, J. P. Schiffer, D. V. Shetty, and M. Wiedeking Department of Physics, Western Michigan University, Kalamazoo, Michigan 49008-5252, USA Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA Joint Institute for Nuclear Astrophysics, Michigan State University, East Lansing, Michigan 48824, USA Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA LANSCE-NS, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA Lawrence Livermore National Laboratory, Livermore, California 94551, USA (Received 16 June 2010; published 23 September 2010) We have studied the 15Cðd; pÞ16C reaction in inverse kinematics using the Helical Orbit Spectrometer at Argonne National Laboratory. Prior studies of electromagnetic-transition rates in C suggested an exotic decoupling of the valence neutrons from the core in that nucleus. Neutron-adding spectroscopic factors give a different probe of the wave functions of the relevant states in C. Shell-model calculations reproduce both the present transfer data and the previously measured transition rates, suggesting that C may be described without invoking very exotic phenomena.