[1]Physics Department, AI Azhar University, Gaza, Gaza Strip, Palestinian Authority [2]Physics Department, lslamic University, Gaza, P.O. Box 108, Gaza Strip, Palestinian Authority [3]Institute of Energy Research and Physical Technologies, Clausthal University of Technology, Leibnizstr. 4, 38678 Clausthal-Zellerfeld, Germany;
[1]Physics Department, AI Azhar University, Gaza, Gaza Strip, Palestinian Authority [2]Physics Department, lslamic University, Gaza, P.O. Box 108, Gaza Strip, Palestinian Authority [3]Institute of Energy Research and Physical Technologies, Clausthal University of Technology, Leibnizstr. 4, 38678 Clausthal-Zellerfeld, Germany;
[1]Physics Department, AI Azhar University, Gaza, Gaza Strip, Palestinian Authority [2]Physics Department, lslamic University, Gaza, P.O. Box 108, Gaza Strip, Palestinian Authority [3]Institute of Energy Research and Physical Technologies, Clausthal University of Technology, Leibnizstr. 4, 38678 Clausthal-Zellerfeld, Germany;
