1. Laboratoire
des Matériaux,
Surfaces et Procédés pour la Catalyse, CNRS-Université de Strasbourg (UDS) UMR 7515, 25 rue Becquerel, 67087 Strasbourg Cedex 08, France
2. Sincrotrone Trieste SCpA, Strada statale 14, km 163.5, I-34149 Basovizza-Trieste,
Italy
3. Charles University, Faculty of Mathematics and Physics, Department
of Surface and Plasma
Science, V Holešovičkách 2, CZ-18000 Prague 8,
Czech Republic
4. Institute
of Physics, Academy of Sciences of the Czech Republic, Cukrovarnická
10, CZ-16253 Prague 6, Czech Republic