We used CHILI, the Chicago Instrument for Laser Ionization, a new resonance ionization mass spectrometer developed for isotopic analysis of small samples, to analyze strontium, zirconium, and barium isotopes in 22 presolar silicon carbide grains. Twenty of the grains showed detectable strontium ...

The high efficiency of SrTiO3 in the reaction of heterogeneous photocatalysis needs a suitable architecture that maximises photon absorption and minimises electron loss during excitation state. In order to further enhance the migration of charge carriers during excitation state, considerable eff...

Highly crystalline (110) layered perovskite Sr2Nb2O7, (111) layered perovskite Sr5Nb4O15 and complex perovskite Sr4Nb2O9 were prepared by NaCl-KCl flux growth method from SrCO3 and Nb2O5. This flux synthesis achieves single strontium niobate phase in contrast to mixed niobates from the solid sta...

The existence of α-Sr2GeN2 and β-Sr2GeN2 were reported recently with their structural properties. In this paper, electronic and optical properties have been investigated using density functional theory. The Perdew–Burke–Ernzerhof generalized gradient approximation (GGA-PBE) is used for the e...

Strontium (Sr) removal from seawater has recently attracted attention from an environmental perspective after the Fukushima Nuclear Power Plant accident, but there is a lack of effective removal techniques for removing Sr from seawater. In the present study, we looked at the removal efficiency o...

A number of new, layered nitride mixed halides have been synthesised in the quaternary phase systems Sr–N–Cl–Br and Sr–N–Br–I. The variation in structure with composition has been investigated by powder X-ray and powder neutron diffraction techniques and the structure of strontium nitride ...

This study is a report on successful synthesis of strontium titanate (SrTiO3) nanocubes using a conventional hydrothermal method, their assembly on mesoporous graphitic carbon nitride (mpg-C3N4) to yield novel SrTiO3/mpg-C3N4 nanocomposites, as well as sonocatalyst performance of SrTiO3/mpg-C3N4...

The SiCf/W–20Cu composites are prepared by spark plasma sintering (SPS) process at 1200 °C for 10 min under a pressure of 30 MPa, using titanium nitride (TiN) coated SiC fibers (SiCf) and W–20Cu composite powders. Effects of amounts of the TiN coated SiCf on the phases, microstructure and pro...

In this work, we present our latest results on UV emission in bulk ZBLAN glasses doped with thulium ions, broadening knowledge of the short-wavelength optical properties of this system. We examined a set of samples with different activator concentrations (2500, 10,000, 25,000 and 50,000 ppm) in ...

Three-nuclear clusters Nd2LnI5(S2)(S2N2)(THF)9 (Ln = Tb, Tm) were prepared by the disproportionation reaction of iodide-nitride [(NdI)3N2](THF)6 with LnI3(THF)3 in the presence of sulfur. Molecule of the cluster contains a flat inorganic core formed by two Nd and Ln atoms connected by dithiadiaz...

The concentration quenching behaviour of erbium, terbium, and thulium ions embedded in sputter deposited AlN films was investigated. For each of these three systems a series of specimens with different ion concentrations was prepared. In all three cases the concentration for maximum of the lumin...

We experimentally demonstrate Q-switched Thulium-doped fiber laser operating at 1949.19 nm using pure gold saturable absorber (Au-SA) as a Q-switcher. The Au-SA was fabricated by depositing gold particles molecules using electron beam evaporation on the surface of a polyvinyl alcohol (PVA) film....

Boron nitride nanotubes doped in situ with samarium (Sm-doped BNNTs) were synthesized at 1150 °C under atmosphere of NH3/N2 gas mixture by thermal chemical vapor deposition (TCVD) using samarium oxide that is a product of the process separation of thorium and uranium tailings. The samarium in t...

This paper summarives the results obtained during a course of study of the preparation of thorium nitrides, Th3N4 and ThN.Well-crystallived Th3N4 free from ovide has been prepared by the reaction of powdered Th4H15 with flowing N2 at 800 °C. Thermal decomposition of Th3N4 under various conditio...

The electronic properties of cubic (B1-type) thorium carbide (ThC), nitride (ThN) and meta-stable monoxide (ThO) were calculated systematically using the full-potential linearized augmented plane wave method with the generalized gradient approximation for the exchange and correlation potential (...

In this paper, sensitivity calculations of the thorium based epithermal reactor(TBER) have been carried out by using the MCNP6 code including neutron spectra evaluations of several various conditions. The possibility of a thorium based epithermal reactor is presented through comparison with a fu...

As the continuation of a previous research work, in this paper the utilization of thorium-based metallic fuel is investigated in an ASTRID-like fast reactor core. The main goal of this paper is to compare the neutronic behavior and the isotopes evolution between the previously studied reference ...

A molecular dynamics (MD) calculation was performed for thorium nitride (ThN) in the temperature range from 300 to 2800 K to evaluate the thermophysical properties, viz. the lattice parameter (a), linear thermal expansion coefficient (αlin), compressibility (β), heat capacity (CP), and thermal...

In this work the utilization of thorium in a gas cooled fast reactor was investigated. The study is based on the reference concept proposed by the French CEA (Commisariat à l'Energie Atomique et aux Energies Alternatives), with a thermal power of 2400 MWth (GFR2400). The Monte Carlo Serpen...

Besides promising implications as fertile nuclear materials, thorium carbonitrides are of great interest owing to their peculiar physical and chemical properties, such as high density, high melting point, good thermal conductivity. This paper reports first-principles simulation results on the st...