Author details

Mhlambululi Mafu<sup>1</sup> \* and Makhamisa Senekane<sup>2</sup>

\*Address all correspondence to: mhlambululi.mafu@gmail.com

1 Department of Physics and Astronomy, Botswana International University of Science and Technology, Palapye, Botswana

2 Department of Physics and Electronics, National University of Lesotho, Roma, Lesotho
