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ISSN : 1738-1894(Print)
ISSN : 2288-5471(Online)
ISSN : 2288-5471(Online)
방사성폐기물드럼 핵종분석에서 감마선 감쇠보정 방법들의 비교 평가
Comparison of the Correction Methods for Gamma Ray Attenuation in the Radioactive Waste Drum Assay
Abstract
In the measurement of gamma rays emitted from the nuclide in the radioactive waste drum, to analyze the nuclide concentration accurately, it is necessary to use the proper calibration standards and to correct for the attenuation of the gamma rays. Two drums having a different density were used to analyze the nuclide concentration inside the drum in this study. After carrying out the system calibration, we measured the gamma rays emitted from the standard source inside the model drum with changing the distance between the drum and the detector. The measured values were corrected with the three kinds of gamma attenuation correction methode, as a results, the error was less than 10 % in the low density drum and less than 25 % in the high density drum. The measured activity in the short distance was more accruable than in the long distance. The transmission correction for the mass attenuation showed good results(very Low error) compared to the mean density and the differential peak correction method.
NDA, Model drum, Gamma-ray, Attenuation correction, Mass attenuation coefficient, Transmission Source, 비파괴분석, 모델드럼, 감마선, 감쇠보정, 질량감쇠계수, 전송선원
Reference
JNFCWT
Online Submission
Korean Radioactive
Waste Society (KRS)
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