1. Physics Department; University of Cukurova; 01330; Adana; Turkey
2. Bor Vocational School; University of Nigde; 51240; Nigde; Turkey
3. Physics Department; University of Nigde; 51100; Nigde; Turkey
4. Stanford Synchrotron Radiation Laboratory; 2575 Sand Hill Road; MenloPark; CA 94025; USA