1. School of Chemistry, Norwich Research Park, University of East Anglia, Norwich NR4 7TJ, United Kingdom
2. Centre for Photonics and Quantum Science, University of East Anglia, Norwich NR4 7TJ, United Kingdom
3. CNR-Istituto di Struttura della Materia, Area della Ricerca di Roma 1, Rome, Italy
4. Department of Chemistry, University of York, Heslington, York YO10 5DD, United Kingdom
5. Department of Physics, Stockholm University, SE-10691 Stockholm, Sweden
6. Elettra Sincrotrone Trieste, Trieste, Italy