%0 Journal Article %T IMPROVING THE PERFORMANCE OF 241Am-Be FOR PGNAA APPLICATIONS USING A PROPER SHIELDING FOR NEUTRON SOURCE AND THE NaI DETECTOR %A PANJEH, HAMED %A Miri Hakimabad, Seyyed Hashem %A Rafat Motavali, Laleh %J Nuclear Technology & Radiation Protection %@ 1451-3994 %D 2010