The evolution of an electromagnetic pulse propagating through a linear, dispersive, and absorbing dielectric (as predicted by the modern asymptotic extension of the classic theory of Sommerfeld and Brillouin) is described in physical terms. The description is similar to the group-velocity description known for plane-wave pulses propagating through lossless, gainless, dispersive media but with t...

A procedure and program are described for rapid, economical and simple production of fully quantitative, multi-element analyses from energy dispersive microprobe data. Methods are outlined for background shaping and scaling, comprehensive overlap correction, and adjustment for instrumental drift. Program facilities include the output of all coefficients required, built-in standard data, the opt...

Introduction We describe a new diffraction technique for Combined Angleand Energy-dispersive Structural Analysis and Refinement (CAESAR), which collects angle-dispersive data by scanning a solid-state detector (SSD) with white synchrotron radiation. We demonstrate the feasibility by analyzing data collected on αAl2O3 at ambient conditions using the Rietveld technique, with varying schemes of da...

The dispersive optical model approach to nucleon scattering is extended from spherical nuclei to permanently deformed nuclei for the rst time. Here, a dispersive coupled channels analysis of proton and neutron scattering and reaction cross sections is presented for Ta and W for incident energies up to 200 MeV. A very good overall agreement between experimental data and predictions is achieved u...

Using a Fourier spectral method, we provide a detailed numerical investigation of dispersive Schrödinger-type equations involving a fractional Laplacian in an one-dimensional case. By an appropriate choice of the dispersive exponent, both mass and energy sub- and supercritical regimes can be identified. This allows us to study the possibility of finite time blow-up versus global existence, the ...

The level of scientific rigor has advanced since many of the electrodiagnostic (EDX) tests were developed. Currently, there is a paucity of blinded studies (i.e., where the person evaluating the data does not know the clinical details) in the research assessment of EDX tests. Lack of blinding is now recognized as a major source for the introduction of bias into the performance and interpretatio...

A representative of the fluoride-containing iron pnictide high-temperature superconductors, namely CaFFeAs, was doped with sodium up to the composition Ca0.86Na0.14FFeAs for the first time. Single crystals with an edge length in the range of 0.1 – 2.0 mm were obtained via solid-state and flux syntheses, respectively. The composition of the crystals was verified by means of single crystal X-ray ...

This study successfully applied multi-mode laser cutting with the variation of the laser cutting speed to cement mortar for the first time. The effects of the amount of silica sand in the cement mortar on laser cutting are tested and analyzed. The kerf width and penetration depth of the specimens after laser cutting are investigated. As the laser cutting speed increases, the penetration depth d...

Inelastic neutron scattering has been used to obtain a comprehensive description of the absolute dynamical spin susceptibility x9(q,v) of the underdoped superconducting cuprate YBa2Cu3O6.5 (Tc552 K! over a wide range of energies and temperatures ~2 meV <\v< 120 meV and 5 K<T<200 K!. Spin excitations of two distinct symmetries ~even and odd under the exchange of two adjacent CuO2 layers! are obs...

Cross-control of a material property - manipulation of a physical quantity (e.g., magnetisation) by a nonconjugate field (e.g., electrical field) - is a challenge in fundamental science and also important for technological device applications. It has been demonstrated that magnetic properties can be controlled by electrical and optical stimuli in various magnets. Here we find that heat-treatmen...