scholarly journals MCNP-X Monte Carlo Code Application for Mass Attenuation Coefficients of Concrete at Different Energies by Modeling 3 × 3 Inch NaI(Tl) Detector and Comparison with XCOM and Monte Carlo Data

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Huseyin Ozan Tekin
Keyword(s):  
Monte Carlo ◽  
Gamma Ray ◽  
Experimental Studies ◽  
Concrete Sample ◽  
Monte Carlo Code ◽  
Monte Carlo Data ◽  
Attenuation Coefficients ◽  
Research Fields ◽  
Mass Attenuation Coefficients ◽  
Mass Attenuation

Gamma-ray measurements in various research fields require efficient detectors. One of these research fields is mass attenuation coefficients of different materials. Apart from experimental studies, the Monte Carlo (MC) method has become one of the most popular tools in detector studies. An NaI(Tl) detector has been modeled, and, for a validation study of the modeled NaI(Tl) detector, the absolute efficiency of 3 × 3 inch cylindrical NaI(Tl) detector has been calculated by using the general purpose Monte Carlo code MCNP-X (version 2.4.0) and compared with previous studies in literature in the range of 661–2620 keV. In the present work, the applicability of MCNP-X Monte Carlo code for mass attenuation of concrete sample material as building material at photon energies 59.5 keV, 80 keV, 356 keV, 661.6 keV, 1173.2 keV, and 1332.5 keV has been tested by using validated NaI(Tl) detector. The mass attenuation coefficients of concrete sample have been calculated. The calculated results agreed well with experimental and some other theoretical results. The results specify that this process can be followed to determine the data on the attenuation of gamma-rays with other required energies in other materials or in new complex materials. It can be concluded that data from Monte Carlo is a strong tool not only for efficiency studies but also for mass attenuation coefficients calculations.

Comparison of mass attenuation coefficients of concretes using FLUKA, XCOM and experiment results

2018 ◽  
Vol 53 (2) ◽  
pp. 145-148 ◽  
Author(s):  
V.P. Singh ◽  
T. Korkut ◽  
N.M. Badiger
Keyword(s):  
Monte Carlo ◽  
Gamma Ray ◽  
High Energy ◽  
Steel Scrap ◽  
Linear Attenuation Coefficient ◽  
Monte Carlo Code ◽  
Attenuation Coefficients ◽  
Energy Gamma ◽  
Mass Attenuation Coefficients ◽  
Mass Attenuation

The mass attenuation coefficients of seven different types of normal and heavy concretes like ordinary, hematite-serpentine, ilmenite-limonite, basalt-magnetite, ilmenite, steel-scrap and steel-magnetite concretes has been simulated using FLUKA Monte Carlo code at high energies 1.5, 2, 3, 4, 5 and 6 MeV. The mass attenuation coefficients and linear attenuation coefficient of the concretes were found dependent upon the chemical composition, density and gamma ray energy. FLUKA Monte Carlo code results were found in good agreement with experimental and theoretical XCOM data. Our investigations for high energy gamma-ray interaction validate the FLUKA Monte Carlo code for use where experimental gamma-ray interaction results are not available.

Investigation of mass attenuation coefficients of water, concrete and bakelite at different energies using the FLUKA Monte Carlo code

2013 ◽  
Vol 298 (2) ◽  
pp. 1303-1307 ◽  
Author(s):  
Nilgun Demir ◽  
Urkiye Akar Tarim ◽  
Maria-Ana Popovici ◽  
Zehra Nur Demirci ◽  
Orhan Gurler ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Code ◽  
Attenuation Coefficients ◽  
Mass Attenuation Coefficients ◽  
Mass Attenuation

Z dependence of photon interactions in wood materials

2013 ◽  
Vol 91 (3) ◽  
pp. 221-225 ◽  
Author(s):  
B. Saritha ◽  
A.S. Nageswara Rao
Keyword(s):  
Gamma Ray ◽  
Mass Attenuation Coefficient ◽  
Narrow Beam ◽  
Attenuation Coefficients ◽  
Beam Geometry ◽  
Mass Attenuation Coefficients ◽  
Experimental Values ◽  
Photon Interactions ◽  
Good Agreement ◽  
Mass Attenuation

Transmission experiments were performed on wood in a narrow-beam geometry using a collimated gamma ray beam at 59.5 and 661.6 keV. The mass attenuation coefficients were determined from experiment, and effective atomic numbers were computed from theoretical equations. It was found that the mass attenuation coefficient decreases with increasing photon energy. Experimental values were compared with those from the XCOM database and with analytical results, and good agreement was achieved. This type of study gives some insight about photon interactions with wood materials.

scholarly journals Measuring Mass Attenuation Coefficient and Elemental Composition for Egbeda Soil Series of Southwestern Nigeria

2021 ◽  
Vol 9 (04) ◽  
pp. 01-10
Author(s):  
Fajemiroye, Joseph Ademola
Keyword(s):  
Elemental Composition ◽  
Attenuation Coefficient ◽  
Production Efficiency ◽  
Gamma Ray ◽  
Soil Depth ◽  
Mass Attenuation Coefficient ◽  
Soil Series ◽  
Attenuation Coefficients ◽  
Mass Attenuation Coefficients ◽  
Mass Attenuation

Information from workers on the profitability of cassava on Iwo and Egbeda soil series in Oyo state, Nigeria have shown the Iwo soil series to be more profitable given the same scale of cassava cultivation. Therefore the need arises to improve on the soil properties of Egbeda soil series which will possibly improve the production efficiency for this category of farmers. In this work, an experimental procedure using gamma attenuation technique to determine the mass attenuation coefficient at different gamma ray energies of 59.5, 661.7, 1173.2 and 1332.5 keV, and at depths of 0 – 15, 15 – 30, 30 – 45, 45 – 60, 60 – 75 and 75 – 90 cm into the Egbeda soil series profile have been studied. Likewise X-ray fluorescence, XRF, method was used to obtain the elemental composition and concentrations at these depths while the XCOM software was applied to obtain the photon mass attenuation coefficients at the different gamma ray energies for the depths. Mass attenuation coefficients,  obtained experimentally and that computed theoretically using XCOM varied exponentially with photon energy. The correlation coefficient between the experimentally-obtained and XCOM-obtained μs for the energies considered ranged from 0.89 – 0.96. The variation of  with soil depth show that the top soil (0 – 15cm depths) is least attenuating with gamma ray penetrability varying down the profile. Information on the mass attenuation coefficients, elemental composition, and concentrations at varying depths into the soil profile will go a long way in contributing to efforts at improving the soil condition of the Egbeda soil series.  

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