1. Division of Agricultural Colleges, Ahmadu Bello University, Zaria, Nigeria
2. Department of Physics, Ahmadu Bello University, Zaria, Nigeria
3. Center for Energy Research and Training, Ahmadu Bello University, Zaria, Nigeria
4. Department of Physics, Confluence University of Science and Technology, Kogi, Nigeria
5. Department of Physics, Umaru Musa Yar’adua University, Katsina, Nigeria