1. Department of Physics, College of Science, University of Sumer, Al-Rifai, 64005 Thi-Qar, Iraq
2. Departamento de Física, Universidad de Oviedo & CINN (CSIC), Oviedo 33007, Spain
3. Nasiriyah Directorate of Education, Ministry of Education, Nasiriyah, 64001 Thi-Qar, Iraq