1. US Naval Research Laboratory Washington DC 02375 USA
2. Electrosciences Ltd. Farnham GU9 9QT UK
3. School of Materials Science and Engineering University of New South Wales Sydney Union Rd Kensington NSW 2052 Australia
4. Department of Physics Rowan University Glassboro NJ 08028‐1701 USA
5. Defence Science and Technology Group Aerospace Division Fishermans Bend VIC 3207 Australia
6. Department of Mechanical Engineering University of Sydney Sydney NSW 2006 Australia
7. Department of Physics University of Warwick Conventry CV4 7AL UK
8. Oliver Lodge Laboratory Department of Physics University of Liverpool Liverpool L69 3BX UK
9. XMaS Beamline European Synchrotron Radiation Facility Grenoble F‐38043 France
10. European Synchrotron Radiation Facility 71 Avenue des Martyrs, CS40220 Grenoble Cedex 9 38043 France
11. I16 Beamline Diamond Light Source Oxfordshire OX11 0DE UK