Determination of mass attenuation coefficients, effective atomic numbers and effective electron numbers for heavy-weight and normal-weight concretes

2013 ◽  
Vol 80 ◽  
pp. 73-77 ◽  
Author(s):  
Adem Un ◽  
Faruk Demir
Keyword(s):  
Normal Weight ◽  
Attenuation Coefficients ◽  
Effective Electron ◽  
Heavy Weight ◽  
Mass Attenuation Coefficients ◽  
Effective Atomic Numbers ◽  
Mass Attenuation

Determination of effective atomic numbers and electron densities for some synthesized triazoles from the measured total mass attenuation coefficients at different energies

2019 ◽  
Vol 97 (1) ◽  
pp. 86-92 ◽  
Author(s):  
F. Akman ◽  
I.H. Geçibesler ◽  
I. Demirkol ◽  
A. Çetin
Keyword(s):  
Total Mass ◽  
Effective Atomic Number ◽  
Electron Densities ◽  
Atom Number ◽  
Attenuation Coefficients ◽  
Effective Electron ◽  
Mass Attenuation Coefficients ◽  
Effective Atomic Numbers ◽  
Theoretical Results ◽  
Mass Attenuation

The effective atomic numbers and electron densities of some synthesized triazoles were determined using the experimental values of total mass attenuation coefficients at 13.93, 17.77, 26.34, and 59.54 keV photon energies. The measurements were performed in a transmission geometry that consists of a Si(Li) detector, an 241Am point source and a target. The measured results were compared with two different theoretical results. The measured results are generally consistent with the theoretical results. It is observed that the measured parameters depend on the photon energy, weighted contributions of the individual atoms within the triazoles, atom number in the triazoles, and chemical composition of triazoles. Also, the effective electron density increases linearly with increasing effective atomic number.

scholarly journals Determination of effective atomic numbers and electron densities from mass attenuation coefficients for some selected complexes containing lanthanides

2017 ◽  
Vol 95 (10) ◽  
pp. 1005-1011 ◽  
Author(s):  
Ferdi Akman ◽  
Mustafa Recep Kaçal ◽  
Feride Akman ◽  
Mustafa Serkan Soylu
Keyword(s):  
Chemical Parameters ◽  
Electron Densities ◽  
Attenuation Coefficients ◽  
Transmission Geometry ◽  
Mass Attenuation Coefficients ◽  
Effective Atomic Numbers ◽  
Theoretical Results ◽  
Good Agreement ◽  
Mass Attenuation

The effective atomic numbers and electron densities for the pure elemental forms of gadolinium (Gd), dysprosium (Dy), erbium (Er), and ytterbium (Yb), and some of their selected complexes, were obtained from the measured total mass attenuation coefficients at 13.92, 17.75, 20.78, 26.34, and 59.54 keV photon energies using a high-resolution Si(Li) detector by adopting transmission geometry. The measured results were compared with two different theoretical results. Within experimental deviations, our data are in good agreement with the theoretical values. The obtained parameters were also interpreted with some selected chemical parameters.

Effective Atomic Numbers and Electron Densities of BaO-Na2O-B2O3-SiO2 Glass System: Theoretical Calculation

2016 ◽  
Vol 675-676 ◽  
pp. 331-334
Author(s):  
N.W. Sangwaranatee ◽  
Narong Sangwaranatee ◽  
S. Sarachai ◽  
Suparat Tuscharoen ◽  
Jakrapong Kaewkhao
Keyword(s):  
Theoretical Calculation ◽  
Glass System ◽  
Electron Densities ◽  
Attenuation Coefficients ◽  
Effective Electron ◽  
Result Show ◽  
Mass Attenuation Coefficients ◽  
Effective Atomic Numbers ◽  
Glass Matrices ◽  
Mass Attenuation

In this work, the mass attenuation coefficients, the effective atomic numbers and the effective electron densities of BaO-Na2O-B2O3-SiO2 glass have been studied at 662 keV using WinXCom program. The result show that the mass attenuation coefficients increased with increasing of BaO concentration, reflecting that more photon is attenuated. The effective atomic numbers and the effective electron densities are similar trend with mass attenuation coefficients, reflecting that more virtual electron when higher BaO concentration and more interaction will be occurred in glass matrices.

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