THEORETICAL INVESTIGATION FOR YTTERBIUM EFFECT ON RADIATION SHIELDING CHARACTERISTICS OF 50Bi2O3-15Li2O-15PbO-(20-X)B2O3-Yb2O3 BORATE GLASSES. - AYGÜN, Murat; AYGÜN, Zeynep; HAN, İbrahim; NARMANLI HAN, Emine (Konya Journal of Engineering Sciences / Konya Mühendislik Bilimleri Dergisi, 2024)