An extensive investigation on gamma ray shielding features of Pd/Ag-based alloys

Radiation shielding investigations for selected tellurite-based glasses belonging to the TNW system

Comprehensive study on the structural, optical, physical and gamma photon shielding features of B2O3-Bi2O3-PbO-TiO2 glasses using WinXCOM and Geant4 code

Gamma ray shielding characteristics and exposure buildup factor for some natural rocks using MCNP-5 code

The linear attenuation coefficients (μ) of various marble concretes have been studied in gamma energies 662, 1173, and 1332 keV by using the GEANT4 Monte Carlo simulation. The simulated results were then compared with experimental data, and a good agreement was observed for the concretes involved. The obtained results reveal that the concrete namely NM20 has higher μ and lower transmission factor among the selected concretes.

Comparison of shielding properties of various marble concretes using GEANT4 simulation and experimental data

Perlite mineral contains relatively high water and in general hydrated obsidian forms the perlite which is mainly an amorphous volcanic glass. Photon attenuation properties for different concrete types including natural perlite mineral and B4C have been experimentally investigated by using different radioactive point sources at 81, 276, 303, 356, 384, 662, 1173, 1275 and 1333 keV. SEM and EDAX analyses were carried out to control the crystal structure of the selected concrete types. In this work, HPGe detector based on gamma spectrometer was employed for all experiments. The results revealed that among the prepared concrete samples, the P6 concrete sample has the lowest HVL and MFP values and thus, having best ability to attenuate gamma rays in comparison to the other prepared concretes.

Experimental investigation of photon attenuation behaviors for concretes including natural perlite mineral

In this paper, we present a numerical meshless method, which is based on the radial basis functions (RBF), to solve the morphology-dependent resonance (MDR) modes of a dielectric micro-sphere. To check the accuracy of the considered RBF method, we calculated the transverse electric (TE) and transverse magnetic (TM) modes of a perfect sphere that has an analytical characteristic equation. Besides, we employed the traditional mesh-dependent finite difference (FD) method to study the same problem. When we compared the results obtained by the three methods, we observe that the RBF method’s results are in very good agreement with the analytical and FD method’s results. We conclude that the presented meshless method may also be applicable to prolate and oblate spheroidal geometries, which do not have an analytical equation to calculate the modes.

Can Ertugay

Papers

Experimental investigation of photon attenuation behaviors for concretes including natural perlite mineral

Numerical investigation of the resonance modes for the dielectric optical micro-spheres by using radial basis function method