1. Department of Physics, Virginia Tech Blacksburg, Blacksburg, Virginia 24060, USA
2. ISIS Pulsed Neutron and Muon Source, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Harwell Science and Innovation Campus, Didcot OX11 0QX, United Kingdom
3. Physics Department, Indiana University, Bloomington, Indiana 47405, USA
4. Department of Chemical and Biological Engineering, Sir Robert Hadfield Building, University of Sheffield, Sheffield S1 3JD, United Kingdom
5. Department of Physics and Astronomy, University of Sheffield, Sheffield S10 2TN, United Kingdom