Affiliation: | 1.Department of Physics, Faculty of Science, University of Tabuk, Tabuk, Saudi Arabia ;2.Department of Petrochemical, Egyptian Petroleum Research Institute (EPRI), Nasr City, Cairo, Egypt ;3.Chemistry Department, Faculty of Science, University of Tabuk, Tabuk, Saudi Arabia ;4.Spectroscopy Department, National Research Centre, El Buhouth St., Dokki, Giza, 12622, Egypt ;5.Physics Department, Faculty of Science, Menoufia University, Shebin Elkom, Egypt ; |