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- W1997197826 abstract "This study focuses on the evaluation of self-attenuation correction factors (Cf) and linear−attenuation coefficients (μ) of scale samples, produced from the oil fields. This was performed using 152Eu point source at the optimal geometry found (i.e., 3 mm). The scale samples were of apparent density ranging 1.04 − 3.08 g cm−3. The results illustrated that self-attenuation correction values were as high as 5.08 for the most dense samples at γ-energy line of 45.5 keV. High correlation was observed by Pearson matrix between self-attenuation correction factor and sample density (correlation coefficient of 0.967 at γ-energy of 45.5 keV). A simplified model of the relationship between these variables was proposed. The remarkable finding was that when scale sample density increased self-absorption extended to occur to a higher energy line. Hence, self-attenuation correction was negligible at γ-energies of 122, 222, and 344 keV for samples with density ranging 1.04–1.41, 1.45–2.04, and 2.12–3.08 g cm−3, respectively. Since linear attenuation coefficient is material sensitive, it was calculated for each sample. Analysis of variance (ANOVA) reflected the linear relationship between linear-attenuation coefficient and sample density up to 344 keV which disappeared thereafter. The data obtained allowed an accurate determination of the concentrations of γ-emitters in scale samples within the energy range of 45.5–1408 keV." @default.
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- W1997197826 date "2014-09-03" @default.
- W1997197826 modified "2023-09-27" @default.
- W1997197826 title "EVALUATION OF SELF-ATTENUATION COEFFICIENTS OF OIL-PRODUCED SCALES FOR GAMMA-RAY SPECTROSCOPIC ANALYSIS" @default.
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- W1997197826 doi "https://doi.org/10.1080/10739149.2014.891132" @default.
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