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, Г_IAEA-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, Г_EKS-Co-60 sebagai 0.368 + 0.017 mSv m^-2 (GBq j)^-1. Walaupun perbezaan sebanyak 4.84%, Г_EKS-Co-60 dianggap dekat dengan Г_IAEA-Co-60, kerana tiga nilai yang dilaporkan sebelum ini mempunyai perbezaan yang lebih besar. Lagipun, julat  Г_EKS-Co-60 iaitu 0.351-0.385 merangkumi Г_IAEA-Co-60,

ABSTRACT

The International Atomic Energy Agency (IAEA) in 1992 has reported a ⁶⁰Co gamma factor Г_IAEA-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,  Г_EKS-Co-60 as 0.368 + 0.017 mSv m^-2 (GBq j^)-1. Despite a difference of 4.84%,   Г_EKS-Co-60 is considered closer to   Г_IAEA-Co-60 as three previously reported value have recorded a larger difference. In fact, the range of   Г_EKS-Co-60 i.e. 0.351-0.385 covers  Г_IAEA-Co-60.

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