We present a comparison of between two polychromatic x-ray imaging techniques used to characterize materials: dual energy (DE) attenuation and phase-attenuation (PA), the latter being implemented via scanning-based Edge Illumination system. The system-independent method extract electron density effective atomic number developed by Azevedo et al. IEEE Trans. Nucl. Sci. 63, 341 (2016)—SIRZ—is emp...

In plane wave based electronic structure calculations the interaction of core and valence electrons is usually represented by atomic effective core potentials. They are constructed in such a way that the shape of the atomic valence orbitals outside a certain core radius is reproduced correctly with respect to the corresponding all-electron calculations. Here we present a method which, in conjun...

Small-angle X-ray scattering (SAXS), a scattering tool of atomic spatial resolution and high penetration power, provides a non-destructive scattering tool in structural characterization for surfaces, interfaces, as well as bulks, and is an decent complimentary technique to the direct imaging tools such as the SEM, TEM, and AFM in nanostructure research. Capable in probing structural information...

Pristine graphene is strongly diamagnetic. However, graphene with single carbon atom defects could exhibit paramagnetism. Theoretically, the π magnetism induced by the monovacancy in graphene is characteristic of two spin-split density-of-states (DOS) peaks close to the Dirac point. Since its prediction, many experiments have attempted to study this π magnetism in graphene, whereas only a notab...

Abstract We report the mechanical properties, elastic moduli, and gamma ray attenuation properties of some TeO 2 –WO 3 –GdF glasses. Using chemical composition selected glasses, dissociation energy per unit volume ( G t ) packing density V were calculated. values, Young’s, Shear, Bulk, Longitudinal Modulus, Poisson’s ratio glasses are Next several fundamental such as linear mass coefficients, h...

Abstract Introduction: Recent studies have shown that the use of high-density nanoparticles (NPs) in concrete composition improves its radiation shielding properties. In present study, linear attenuation coefficients and photon scattering properties newly developed Nano-concretes been calculated using MCNPX Monte Carlo code. Material methods: The containing 10%, 20%, 30% weight percentage Osmiu...

In the calculation of atomic structures within plasma environment, screening effect on nuclei - electron interactions is generally considered, but less considered. this work, MCDHF method combined with potential used to study structure parameters versus density, temperature, nuclear charge and number bound electrons. For ground states first excited helium-like ions, energy shifts, transition sh...

A novel, simple, sensitive and effective method has been developed for preconcentration of the trace Pb (II) ions in aqueous Samples by CNT carboxyl which in order to improve the performance of extraction and preconcentration was used. Amounting of the ions density in solution was performed by the method of flame atomic absorption spectrometry. The effective parameters on extraction such as: ef...