1. School of Basic Sciences and HumanitiesGerman‐Jordanian University Amman 11180 Jordan
2. Surface Physics and Materials Technology lab. Department of PhysicsMutah University Al‐Karak Jordan
3. Leibniz‐Institut für Analytische Wissenschaften ‐ ISAS ‐ e.V 44139 Dortmund Germany
4. Hamdi Mango Center for Scientific ResearchThe University of Jordan Amman 11942 Jordan