Fig.1-13 Influence of background (BG) radiation on the radioactive source (60Co) measurement
For varying irradiation dose rate from 137Cs (0.000, 0.025, 0.474, and 0.954 Sv/h), the varying γ-ray spectra of the radioactive source (60Co 6.38 MBq) were acquired. The γ-ray spectra (60Co) were buried because of the total effects of the 137Cs γ-rays as the irradiation dose rate increased.
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