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.

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.

Photon mass attenuation coefficients, effective atomic numbers and electron densities of some thermoluminescent dosimetric compounds

Pramana ◽  
2004 ◽  
Vol 63 (3) ◽  
pp. 529-541 ◽  
Author(s):  
Shivalinge Gowda ◽  
S. Krishnaveni ◽  
T. Yashoda ◽  
T. K. Umesh ◽  
Ramakrishna Gowda
Keyword(s):  
Photon Mass ◽  
Electron Densities ◽  
Attenuation Coefficients ◽  
Mass Attenuation Coefficients ◽  
Effective Atomic Numbers ◽  
Mass Attenuation

The Mass Attenuation Coefficients and Effective Atomic Numbers of Ruby from Vietnam at Different Photon Energies

2013 ◽  
Vol 770 ◽  
pp. 287-290 ◽  
Author(s):  
Pruittipol Limkitjaroenporn ◽  
Suparat Tuscharoen ◽  
Jakrapong Kaewkhao
Keyword(s):  
X Rays ◽  
Attenuation Coefficients ◽  
Γ Rays ◽  
Mass Attenuation Coefficients ◽  
Effective Atomic Numbers ◽  
Experimental Values ◽  
Fluorescence Spectrometer ◽  
Interaction Probability ◽  
Good Agreement ◽  
Mass Attenuation

The mass attenuation coefficients and effective atomic numbers of ruby from Vietnam were measured at the different energy of γ-rays using the Compton scattering technique. The compositions of ruby were analyzed by energy dispersive x-rays fluorescence spectrometer and showed the Al2O3 is major composition. The results of the experimental values of mass attenuation coefficients and effective atomic numbers showed the good agreement with the theoretical values. The mass attenuation coefficients decreased with the increasing in gamma rays energies, due to the higher photon interaction probability of ruby at lower energy. The effective atomic numbers found to be constant around 10.0 electrons/atom.

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