[1] Univ Sumer, Coll Sci, Dept Phys, Al Rifaee, Thi Qar, Iraq
[2] Univ Al Qadisiyah, Coll Educ, Phys Dept, Diwaniyah, Iraq
[3] Univ Baghdad, Coll Sci, Dept Astron & Space, Baghdad, Iraq
[4] Univ Warwick, Sch Engn, Device Modelling Grp, Coventry CV4 7AL, England
[5] Univ Sumer, Coll Basic Educ, Dept Sci, Al Rifaee, Thi Qar, Iraq