¹ Department of Physics, Florida State University, Tallahassee, FL 32306, USA
² Department of Physics and Astronomy, University of Tennessee, Knoxville, TN 37996, USA
³ Oliver Lodge Laboratory, University of Liverpool, Liverpool, L69 7ZE, UK
⁴ Department of Physics, US Naval Academy, Annapolis, MD 21402, USA
⁵ Physics Division, Argonne National Laboratory, Argonne, IL 60439, USA
⁶ CCLRC Daresbury Laboratory, Daresbury, Warrington, WA4 4AD, UK
⁷ Department of Physics, University of Massachusetts, Lowell, MA 01854, USA
⁸ Physics Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
⁹ Schuster Laboratory, University of Manchester, Manchester M13 9PL, UK
¹⁰ Department of Nuclear Physics, Australian National University, Canberra, ACT 0200, Australia
¹¹ The Niels Bohr Institute, Blegdamsvej 17, DK-2100 Copenhagen, Denmark
¹² Department of Chemistry and Physics, Purdue University Calumet, Hammond, IN 46323, USA
¹³ Nuclear Engineering Division, Argonne National Laboratory, Argonne, IL 60439, USA
¹⁴ Department of Physics, Trinity University, San Antonio, TX 78212, USA
¹⁵ Department of Physics, University of Surrey, Guildford, Surrey GU2 5XH, UK
¹⁶ Department of Mathematical Physics, Lund Institute of Technology, PO Box 118, S-22100 Lund, Sweden