Comparative Study on Effective Atomic Numbers of Silicate, Borate and Phosphate Glass Matrices over 1 keV-100 GeV Energy Range

2014 ◽  
Vol 979 ◽  
pp. 405-408
Author(s):  
Keerati Kirdsiri ◽  
Narong Sangwaranatee
Keyword(s):  
Chemical Composition ◽  
Comparative Study ◽  
Energy Range ◽  
Total Mass ◽  
Mass Attenuation Coefficient ◽  
Attenuation Coefficients ◽  
Mass Attenuation Coefficients ◽  
Effective Atomic Numbers ◽  
Glass Matrices ◽  
Mass Attenuation

In this work, total mass attenuation coefficients and effective atomic numbers of a series of three host glasses with different chemical composition, 65RmOn: 10CaO : 25Na2O mol% (where RmOnare B2O3, SiO2and P2O5, respectively) have been studied as a function of photon energy. The total mass attenuation coefficient values were taken from WinXCom program, were used to evaluate the effective atomic numbers in the energy range from 1 keV to 100 GeV. The obtained results for all samples are compared and discussed.

Theoretical Study of the Photon Interaction for Zirconium Alloy at 1 keV to 100 MeV

2016 ◽  
Vol 675-676 ◽  
pp. 730-733
Author(s):  
Chumphon Khobkham ◽  
W. Chaiphaksa ◽  
P. Limkitjaroenporn ◽  
P. Prongsamrong ◽  
P. Wiwatkanjana ◽  
...  
Keyword(s):  
Attenuation Coefficient ◽  
Total Mass ◽  
Zirconium Alloy ◽  
Gamma Ray ◽  
Mass Attenuation Coefficient ◽  
Chemical Compositions ◽  
Electron Densities ◽  
Attenuation Coefficients ◽  
Effective Atomic Numbers ◽  
Mass Attenuation

In this work, the total mass attenuation coefficient and partial interactions of the zirconium alloy have been calculated by WinXCom program at 1 keV-100 MeV gamma ray energies. Zr2(Fe,Ni) alloys was studied for the mass attenuation coefficients, photoelectric absorption, incoherent, coherent and pair production processes. The effective atomic numbers and electron densities were also calculated. The calculated results show that the total mass attenuation coefficient decreased with increasing of gamma rays energy. The value of total mass attenuation coefficient of each material was different, which depend on chemical compositions of alloy. The partials interactions, effective atomic numbers and electron densities were also calculated and discussed.

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.

Mass Attenuation Coefficients and Effective Atomic Numbers of Strontium Borate Glass System in the Energy Range 0.01- 1.25 MeV

2014 ◽  
Vol 895 ◽  
pp. 315-318
Author(s):  
Tou Ying Lim ◽  
Husin Wagiran ◽  
Rosli Hussin ◽  
Suhairul Hashim
Keyword(s):  
Energy Range ◽  
Cross Section ◽  
Photon Energy ◽  
Power Law ◽  
Attenuation Coefficients ◽  
Photon Interaction ◽  
Strontium Borate ◽  
Mass Attenuation Coefficients ◽  
Effective Atomic Numbers ◽  
Mass Attenuation

Understanding the characterization of photon interaction is vital in nuclear science and technology field. The information obtained from mass attenuation coefficients (μ / ρ) and effective atomic numbers Zeff are compared with the reference value for good interpretation of radiation interaction with matter. However, the methods of Zeff calculation sometimes are confusing. In the present work, the total mass attenuation coefficients (μ / ρ) T for photon interaction of Dy2O3 doped strontium borate glasses have been calculated using database tabulated by Hubbell and Seltzer, at the energies of 0.6 MeV and 1.25 MeV. For the calculation of the Zeff, the power law, cross section and Auto-Zeff are selected for comparison purpose in the energy range of 0.01 – 1.25 MeV. The relationship between the (μ / ρ) T andZeff clearly shows the increase in the value with the increase of Dy2O3 concentration. These variations are due to the major dominance of photoelectric effect and minor interaction of incoherent scattering. It is found that the calculation of Zeff between cross section and power law method is comparable at photon energy less than 0.1 MeV. As photon energy exceeds 0.1 MeV, the cross section method and the Auto- Zeff software are more preferred compared to the power law approach. It is recommended to use different approach of Zeff calculation at the specific energy of interest.

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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