Extraction of Gamow - Teller strength distributions from 56 Ni and 55 Co via the ( p , n ) reaction in inverse kinematics

M. Sasano,1,2,* G. Perdikakis,1,2,† R. G. T. Zegers,1,2,3,‡ Sam M. Austin,1,2 D. Bazin,1 B. A. Brown,1,2,3 C. Caesar,4 A. L. Cole,5 J. M. Deaven,1,2,3 N. Ferrante,6 C. J. Guess,2,7 G. W. Hitt,8 M. Honma,9 R. Meharchand,1,2,3,§ F. Montes,1,2 J. Palardy,6 A. Prinke,1,2,3 L. A. Riley,6 H. Sakai,10 M. Scott,1,2,3 A. Stolz,1 T. Suzuki,11,12,13 L. Valdez,1,2,3 and K. Yako14 1National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824-1321, USA 2Joint Institute for Nuclear Astrophysics, Michigan State University, East Lansing, Michigan 48824, USA 3Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA 4GSI Darmstadt, Helmholtz-Zentrum für Schwerionenforschung, D-64291 Darmstadt, Germany 5Physics Department, Kalamazoo College, Kalamazoo, Michigan 49006, USA 6Department of Physics and Astronomy, Ursinus College, Collegeville, Pennsylvania 19426, USA 7Department of Physics, University of Massachusetts Lowell, Lowell, Massachusetts 01854, USA 8Khalifa University of Science, Technology & Research, 127788 Abu Dhabi, UAE 9Center for Mathematical Sciences, University of Aizu, Aizu-Wakamatsu, Fukushima 965-8580, Japan 10RIKEN Nishina Center, Wako 351-0198, Japan 11Department of Physics, College of Humanities and Sciences, Nihon University, Sakurajosui 3-25-40, Setagaya-ku, Tokyo 156-8550, Japan 12Center for Nuclear Study, University of Tokyo, Hirosawa, Wako-shi, Saitama 351-0198, Japan 13National Astronomical Observatory of Japan, Mitaka, Tokyo 181-8588, Japan 14Department of Physics, University of Tokyo, Tokyo 113-0033, Japan (Received 25 July 2012; published 17 September 2012)