Dr. Abd-El-Hamid Bensafi, Associate Professor, Department of Chemistry and Physics, Faculty of Sciences, Abou Bekr Belkaid University of Tlemcen, Algeria
E-mail: aeh.bensafi@gmail.com

Dr. Moustafa Mohamed Abdelrahman, Assoc. Prof., Accelerators and Ion Sources Department, Nuclear Research Center, Egypitation Atomic Energy Authority, Egypt
E-mail: moustafa82003@yahoo.com

Dr. S. BALAMURUGAN, Associate Professor, Advanced Nanomaterials Research Laboratory, Department of Nanotechnology, Noorul Islam Centre for Higher Education, INDIA
E-mail: scandium.chemistry@gmail.com

Dr. Ahmed Hashim Mohaisen Al-Yasari, Department of Physics, College of Education For Pure Science, University of Babylon, Hilla, IRAQ
E-mail: ahmed_taay@yahoo.com

Dr. MORA VEERA MADHAVA RAO, Department of Physics, University College of Science, Osmania University, INDIA
E-mail: madhavmora@yahoo.com

Dr. K.Senthil Kannan, Professor & Head of Physics, St.Eugene University, Lusaka, Zambia
Email: mscgoldmedalist@yahoo.in