Sains Malaysiana 34(1): 41-43 (2005)
Penentuan Faktor Gama untuk satu Radionuklid 60Co
(Determination of Gamma Factor for a 60Co Radionuclide)
Faridah Lisa Supian
Jabatan Fizik
Fakulti Sains dan Teknologi
Universiti Pendidikan Sultan Idris (UPSI)
35900 Tanjong Malim
Perak Darul Ridzuan
ABSTRAK
Badan Tenaga Atom Antarabangsa (IAEA) pada tahun 1992 telah melaporkan faktor gama 60Co, ГIAEA-Co-60 sebagai 0.351 mSv m-2 (GBqj)-1. Eksperimen yang dilakukan di Institut Penyelidikan Teknologi Nuklear (MINT) pada tahun 2003 mendapati faktor gama 60Co, ГEKS-Co-60 sebagai 0.368 + 0.017 mSv m-2 (GBq j)-1. Walaupun perbezaan sebanyak 4.84%, ГEKS-Co-60 dianggap dekat dengan ГIAEA-Co-60, kerana tiga nilai yang dilaporkan sebelum ini mempunyai perbezaan yang lebih besar. Lagipun, julat ГEKS-Co-60 iaitu 0.351-0.385 merangkumi ГIAEA-Co-60,
ABSTRACT
The International Atomic Energy Agency (IAEA) in 1992 has reported a 60Co gamma factor ГIAEA-Co-60 as 0.351 mSv m-2 (GBq h)-1. Experiments that were carried-out in 2003 at the Malaysian Institute for Nuclear Technology (MINT) obtained a gamma factor, ГEKS-Co-60 as 0.368 + 0.017 mSv m-2 (GBq j)-1. Despite a difference of 4.84%, ГEKS-Co-60 is considered closer to ГIAEA-Co-60 as three previously reported value have recorded a larger difference. In fact, the range of ГEKS-Co-60 i.e. 0.351-0.385 covers ГIAEA-Co-60.
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