Affiliation: | 1.TH-PPM Group, Physics Department, Faculty of Sciences, Beni-Suef University, Beni- Suef, Egypt ;2.Department of Physics, Government Dungar College, Rajasthan, Bikaner, 334001, India ;3.Department of Mechanical Engineering, College of Engineering, King Khalid University, PO Box 394, 61421, Abha, Saudi Arabia ;4.Physics Department, Faculty of Sciences, Beni-Suef University, Beni-Suef, Egypt ; |