Attenuation coefficients of soils and some building materials of Bangladesh in the energy range 276–1332keV

Alam, M.N.; Miah, M.M.H.; Chowdhury, M. I.; Kamal, Masud; Ghose, S.; Rahman, Runi

doi:10.1016/s0969-8043(00)00354-7

Cited by 91 publications

(27 citation statements)

References 5 publications

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“…Data on the attenuation of gamma-rays in matter is required for many scientific, engineering, and medical applications [1]. Many studies have recently been carried out on the attenuation coefficients for a number of materials, such as concrete [2][3][4][5], cement [5][6][7][8], glass systems [1,9,10], soil samples [11][12][13] etc. The value of the linear attenuation coefficient depends on the incident photon energy, the atomic number, and the density of the absorber.…”

Section: Introductionmentioning

confidence: 99%

Monte Carlo Calculations for Photon Attenuation Studies on Different Solid Phantom Materials

2017

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The linear attenuation coefficients of water and some solid phantom materials, namely of solid water RMI-457, of plastic water, of RW3 solid water, and of Perspex were determined by Monte Carlo calculations, for gammaray photons with energies of 59.5, 80.9, 140.5, 356.5, 661.6, 1173.2, and 1332.5 keV. The calculated values were compared with the experimental results presented by other researchers and with theoretical values obtained using the XCOM database. Good agreement was observed between the calculations, the experimental, and the theoretical values. The results indicate that the process in Monte Carlo code can be followed to determine the equivalency of other materials at several energies. Three shielding factors such as half-value layer, tenth-value layer, and mean free path were calculated at all considered gamma-ray energies.

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Section: Introductionmentioning

confidence: 99%

Monte Carlo Calculations for Photon Attenuation Studies on Different Solid Phantom Materials

2017

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“…Salinas et al (2006) determined the mass attenuation coefficient for building materials commonly used in Brazil. Alan et al (2001) reports that the mass attenuation coefficients for different soil samples and building materials in Bangladesh were determined. It was observed that heavy beach minerals, which are much denser than the other materials studied, showed photon attenuation coefficients higher than those for soil, sand and building materials.…”

Section: Introductionmentioning

confidence: 99%

Attenuation coefficients for fibrous self-compacting concrete in the energy range of 50-3000keV

Conti

Bento²,

Magalhães³

2017

Braz. J. Rad. Sci.

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The fibrous self-compacting concrete is a high performance concrete with uniformly distributed iron fibers. Transmission measurements, with 137 Cs and 60 Co sources were performed for the attenuation coefficients determination for both ordinary and fibrous self-compacting concretes. The results were compared to each other and to the values found in the literature for ordinary concrete. The mass attenuation coefficient for the fibrous self-compacting concrete showed to be higher than those for ordinary concrete of about 5%, depending on the gamma energy. However, it should be noted that the density of fibrous self-compacting concrete is higher than ordinary concrete, 2.4 g/cm 3 and 1.9 g/cm 3 respectively, increasing still further the difference in mass attenuation coefficient. In addition to that, by using Monte Carlo simulations, with MCNP5 Monte Carlo computer code, the data was extended to the 50-3000 keV gamma energy range.

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“…Because most people spend 80% of their time indoors, this knowledge is essential for the development of standards and guidelines for the use of these materials. Nationwide surveys of the natural radioactivity and the mass attenuation coefficients in various building materials have been carried out in many countries for possible radiological hazards (Beretka and Mathew 1985;Malanca et al 1993;Kumar et al 1999;Alam et al 2001;Stoulos et al 2003;Righi and Bruzzi 2006;Ngachin et al 2007;Tufail et al 2007;Fathivand et al 2007;Awadallah and Imran 2007;Lu and Zhang 2008;Turhan 2008;Cevik et al 2009). …”

Section: Introductionmentioning

confidence: 99%

Assessment of natural radiation exposure levels and mass attenuation coefficients of lime and gypsum samples used in Turkey

Damla

Çevik

Kobya

et al. 2009

Environ Monit Assess

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The activity concentrations of 226Ra, 232Th, and 40K in lime and gypsum samples used as building materials in Turkey were measured using gamma spectrometry. The mean activity concentrations of 226Ra, 232Th, and 40K were found to be 38±16, 20±9, and 156±54 Bq kg(-1) for lime and found to be 17±6, 13±5, and 429±24 Bq kg(-1) for gypsum, respectively. The radiological hazards due to the natural radioactivity in the samples were inferred from calculations of radium equivalent activities (Raeq), indoor absorbed dose rate in the air, the annual effective dose, and gamma and alpha indices. These radiological parameters were evaluated and compared with the internationally recommended limits. The experimental mass attenuation coefficients (μ/ρ) of the samples were determined in the energy range 81-1,332 keV. The experimental mass attenuation coefficients were compared with theoretical values obtained using XCOM. It is found that the calculated values and the experimental results are in good agreement.

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Attenuation coefficients of soils and some building materials of Bangladesh in the energy range 276–1332keV

Cited by 91 publications

References 5 publications

Monte Carlo Calculations for Photon Attenuation Studies on Different Solid Phantom Materials

Monte Carlo Calculations for Photon Attenuation Studies on Different Solid Phantom Materials

Attenuation coefficients for fibrous self-compacting concrete in the energy range of 50-3000keV

Assessment of natural radiation exposure levels and mass attenuation coefficients of lime and gypsum samples used in Turkey

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