Department of Physics;
Northern Border University;
Arar;
Kingdom of Saudi Arabia;
Sudan University of Science & Technlogy;
Khartoum;
Sudan;
Faculty of Dentistry;
University of the Western Cape;
South Africa;
Faculty of Medicine;
University of Al Gedarif;
Al Gedarif;
Sudan;
iThemba LABS;
Accelerator Group;
Somerset West;
South Africa;
iThemba LABS;
Materials Research Department;
Somerset West;
South Africa;
Faculty of Health and Wellness Sciences;
Cape Peninsula University of Technology;