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KMID : 0364920060310010047
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Journal of Radiation Protection and Research
2006 Volume.31 No. 1 p.47 ~ p.52
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A Practical and Simple Method of Self-absorption Correction for Environmental Samples
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Lee Wan-No
Lee Haeng-Pil
Jung Geun-Ho
Choi Keun-Sic
Cho Young-Hyun
Lee Chang-Woo
Chung Hyung-Wook
Lee Eun-Ju
Sho You-Sub
Lee Jong-Ok
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Abstract
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A self-absorption correction is important issue for the exact radioactivity determination of gamma emitting radionuclides in environmental samples which have the range of apparent density from $0.3g/cm^3$ up to $1.5g/cm^3$. In this paper, a practical and simple method without radioactive standard solutions having various densities is proposed for the self-absorption correction of environmental samples by a developed outside beaker surrounding Marinelli beaker. For the densities of 0.8, 1.0, $1.3g/cm^3$, the corrected efficiencies by the new method and the measured those by radioactive standard solutions of the three densities showed good agreement within 4 %.
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KEYWORD
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self-absorption correction, Marinelli geometry, radioactivity, environmental sample
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