1. Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
2. Laboratoire de Physique Subatomique et de Cosmologie, Universite Grenoble Alpes, 38026 Grenoble Cedex, France
3. Grand Accélérateur National d’Ions Lourds, BP 55027, 14076 Caen Cedex 05, France
4. STFC ISIS Pulsed Spallation Neutron and Muon Facility, Rutherford Appleton Laboratory, Harwell OX11 0QX, United Kingdom