1. Istituto Nazionale di Ottica, CNR-INO, 50019 Sesto Fiorentino, Italy
2. European Laboratory for Non Linear Spectroscopy (LENS), 50019 Sesto Fiorentino, Italy
3. Deutsches Elektronen-Synchrotron, D-22607 Hamburg, Germany
4. Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, 100049 Beijing, People’s Republic of China
5. ICGM, CNRS, Université de Montpellier, ENSCM, 34095 Montpellier, France