M. S. Ali
African Institute for Mathematical Sciences, B. P. 1418 Mbour, Thies Region, Senegal. Physics Department, Faculty of Science, New Valley University, Egypt.

A. M. Abdelmonem
University of Jouf, Faculty of Science and Art, Department of Physics, Post Office 207, Al-Jouf,KSA Reactor Physics Department, Nuclear Research Center,Atomic Energy Authority, Post Office 13759, Cairo,Egypt

S. K. Elshamndy
University of Jouf, Faculty of Science and Art, Department of Physics, Post Office 207, Al-Jouf,KSA

G. M. Shoraiet
Physics Department, Faculty of Science, New Valley University, Egypt

T. M. Mustafa
Physics Department, Faculty of Science, New Valley University, Egypt

G. S. Hassan
Physics Department, Faculty of Science, Assiut University, Egypt