1. Spectroscopy Department; Physics Division, National Research Centre; El Behooth St. Dokki Cairo 12622 Egypt
2. Physics Department, Faculty of science; Taif University; P.O. Box 888 Taif 21974 Saudi Arabia
3. Air Pollution Department, Environmental Division; National Research Center; El-Behooth St. Dokki Cairo 12622 Egypt
4. Institute of Nuclear and Particle Physics, National Centre for Scientific Research ‘Demokritos’; Patr. Grigoriou E' & 27 Neapoleos St 153 41 Agia Paraskevi Greece
5. Synchrotron-light for Experimental and Scientific Applications in the Middle East (SESAME); P.O. Box 7 Allan 19252 Jordan
6. Department of Zoology, Science College; King Saud University; P. O. Box 2455 Riyadh 11451 Saudi Arabia
7. Electron Microscope and Thin Films Department; National Research Center (NRC); El-Behooth Street Dokki Cairo 12622 Egypt
8. Atominstitut, TU Wien, Stadionallee 2; 1020 Vienna Austria