Attenuation coefficients for some industrial materials in the energy range 356 keV to 1173 keV

Sipaun, S.M. and Amin, Y.M. and Abdullah, J. (2004) Attenuation coefficients for some industrial materials in the energy range 356 keV to 1173 keV. Jurnal Fizik Malaysia, 26 (2). pp. 103-107. ISSN 0128-0333

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Official URL: http://fizik.um.edu.my/ifm/jfm.htm

Abstract

Gamma-ray attenuation coefficients were determined for several types of industrial material with densities of 0.62 g/cm³ to 1.70 g/cm³. The experimental set-up used a 2" x 2" Nal(TI) scintillation detector and a collimated radiation source of Ba-133 (356 keV), Cs-137 (662 keV) and Co-60 (1173 keV). An optimised experimental set-up was implemented to minimise errors. The linear attenuation coefficients show a linear relationship with the corresponding densities of samples studied. Relationship between mass attenuation coefficient and gamma-ray energy is exponential. The measurements results are reported for n-pentane, ethanol, toluene, polyethylene and cement respectively. At 356 keV, the mass attenuation coefficient values are found to be (0.109 ± 0.015) cm²/g, (0.134 ± 0.018) cm²/g, (0.124 ± 0.014) cm²/g, (0.087 ± 0.011) cm²/g and (0.152 ± 0.003) cm²/g. At 662 keV, the values are (0.092 ± 0.044) cm²/g, (0.081 ± 0.010) cm²/g, (0.084 ± 0.011) cm²/g, (0.064 ± 0.009) cm²/g, (0.103 ± 0.002) cm²/g. At 1173 keV, the values are (0.080 ± 0.047) cm²/g, (0.057 ± 0.010) cm²/g, (0.027 ± 0.005) cm²/g, (0.031 ± 0.004) cm²/g and (0.048 ± 0.001) cm²/g.

Item Type: Article
Uncontrolled Keywords: Attenuation coefficients; Industrial materials; Energy range; 356 keV to 1173 keV
Subjects: Q Science > Q Science (General)
Divisions: Faculty of Science
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 16 Jan 2015 07:42
Last Modified: 16 Jan 2015 07:42
URI: http://eprints.um.edu.my/id/eprint/12152

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