Affiliation: | 1. Department of Physics, Jahangirnagar University, Dhaka, Bangladesh;2. Plasma Physics Division, Atomic Energy Centre, Dhaka, Bangladesh;3. Department of Physics, Jahangirnagar University, Dhaka, Bangladesh Institut für Mathematik, Martin Luther Universität Halle-Wittenberg, Halle, Germany;4. Department of Physics, Bangladesh University of Textiles, Tejgaon Industrial Area, Dhaka, Bangladesh |