Nuclear Charge Radius of Be-12

A. Krieger, K. Blaum, M. L. Bissell, N. Frommgen, Ch. Geppert, M. Hammen, K. Kreim, M. Kowalska, J. Kramer, T. Neff, R. Neugart, G. Neyens, W. Nortershauser, Ch. Novotny, R. Sanchez, and D. T. Yordanov Institut fur Kernchemie, Johannes Gutenberg-Universitat Mainz, D-55128 Mainz, Germany Max-Planck-Institut fur Kernphysik, D-69117 Heidelberg, Germany Instituut voor Kernen Stralingsfysica, K U Leuven, B-3001 Leuven, Belgium GSI Helmholtzzentrum fur Schwerionenforschung GmbH, D-64291 Darmstadt, Germany CERN, Physics Department, CH-1211 Geneva 23, Switzerland Helmholtz-Institut Mainz, Johannes Gutenberg-Universitat, D-55099 Mainz, Germany (Received 14 November 2011; published 3 April 2012)