1. Physics Department, College of Science, Salahaddin University, Erbil 44001, Kurdistan, Iraq
2. Becquerel Institute for Radiation Research and Measurements, Erbil, Kurdistan, Iraq
3. Department of Physics, Government College for Women, Kolar 563101, Karnataka, India
4. Department of Physics (H&S), Government Women Engineering College, Ajmer 305002, India
5. University College of Goizha, Sulaymaniyah, Kurdistan, Iraq