Affiliation: | 1. National Center for Physics, Quaid-i-Azam University campus, 45320 Islamabad, Pakistan;2. Department of Physics, Gomal University, 29050 D.I. Khan, Pakistan;3. Department of Physics, Quaid-i-Azam University, 45320 Islamabad, Pakistan;4. Plasmant Department of Chemistry, University of Antwerp Campus DrieEkin, 2610 Wilrijk Antwerp, Belgium;5. Institute of Physics and Electronics, University of Peshawar, 25120 Peshawar, Pakistan |