[1] Egyptian Atom Energy Author, Nucl Res Ctr, Radiat Protect & Civil Def Dept, Cairo 13759, Egypt
[2] Joint Inst Nucl Res, Frank Lab Neutron Phys, Dubna 141980, Russia
[3] Menoufia Univ, Fac Sci, Dept Phys, Shibin Al Kawm 32511, Egypt
[4] Al Azhar Univ, Fac Sci, Dept Phys, Assiut Branch, Assiut 71524, Egypt
[5] Russian Acad Sci, Far East Geol Inst, Far East Branch, Vladivostok, Russia
[6] Natl Inst Oceanog & Fisheries, Red Sea Branch, Hurghada, Egypt