1. Mathematical and Physics Department; Faculty of Shahid Yazdanpanh; Sanandaj Branch; Technical and Vocational University (TVU); Kurdistan Iran
2. Physics Department; Bu-Ali Sina University; Hamedan 65174 Iran
3. Department of science; University of Payamenoor; PO BOX 19359-3697 Tehran Iran
4. Technical and Vocational Training Organization; Kurdistan Iran
5. Physics department; College of education; University of Garmian; Kalar Iraq