机译:
Department of Physics,Quaid-i-Azam University,45320 Islamabad,Pakistan;
Department of Physics,GC University,54000 Lahore,Pakistan;
Department of Physics,Quaid-i-Azam University,45320 Islamabad,Pakistan;
National Tokamak Fusion Program,P O Box 3329 Islamabad,Pakistan;
National Tokamak Fusion Program,P O Box 3329 Islamabad,Pakistan;
Natural Sciences and Science Education,National Institute of Education,Nanyang Technological University,NIE BLK7,1 Nanyang Walk,Singapore 637616,Singapore;
Department of Physics,Quaid-i-Azam University,45320 Islamabad,Pakistan;