| Authors: |
Mvelase MJ; Department of Physics, University of Zululand, Private Bag X1001, Empangeni, 3880, South Africa. emjay.mvelase@gmail.com.; Department of Physics, University of Johannesburg, P.O. Box 17011, Johannesburg, 2028, South Africa. emjay.mvelase@gmail.com., Ntshangase SS; Department of Physics, University of Zululand, Private Bag X1001, Empangeni, 3880, South Africa., Kheswa BV; Department of Physics, University of Johannesburg, P.O. Box 17011, Johannesburg, 2028, South Africa., Majola SNT; Department of Physics, University of Johannesburg, P.O. Box 17011, Johannesburg, 2028, South Africa., Maleka PP; SSC Laboratory, iThemba LABS, P.O. Box 722, Cape Town, 7129, South Africa. |
