Affiliation: | 1. University of Selcuk, Faculty of Science, Department of Physics, , Konya, 42031 Turkey;2. University of Kocatepe, Faculty of Science and Arts, Department of Physics, , Afyonkarahisar, 03200 Turkey;3. SUPA Department of Physics, University of Strathclyde, , Rottenrow, Glasgow, G4 0NG UK |