1. Nuclear Science Program, Faculty of Science and Technology, University Kebangsaan Malaysia (UKM), Bangi, Malaysia
2. Nigerian Nuclear Regulatory Authority (NNRA), Abuja, Nigeria
3. Nuclear Technology Research Centre, Faculty of Science and Technology, University Kebangsaan Malaysia (UKM), Bangi, Malaysia
4. Department of Physics, Ahmadu Bello University, Zaria, Nigeria