Along the last few years we have conducted several investigations on waves in inhomogeneous plasmas, using the concept of effective dielectric tensor, which has been proposed as the correct dielectric tensor for the description of dielectric properties of inhomogeneous plasmas [1]. Among these investigations, we have considered cases where the magnetic field is homogeneous and other plasma para...

Background: Dose calculation algorithms play a very important role in predicting the explicit dose distribution. We evaluated the percent depth dose (PDD), lateral depth dose profile, and surface dose volume histogram in inhomogeneous media using calculation algorithms and inhomogeneity correction methods. Materials and Methods: The homogeneous and inhomogeneous virtual slab phantoms used in th...

We report on a successful test of new method for intense ion beam formation using an extraction with inhomogeneous electric field. Its key feature is special shape the electrodes providing higher rate acceleration. It applicable to any source type and could be used improve performance wide range plasma devices. The proof concept was carried out high-current electron-cyclotron resonance SMIS 37....

Abstract Radio emission from interplanetary shocks, planetary foreshocks, and some solar flares occurs in the so-called “plasma emission” framework. The generally accepted scenario begins with electrostatic Langmuir waves that are driven by a suprathermal electron beam on Landau resonance. These then mode-convert to freely propagating electromagnetic emissions at local plasma frequency f pe and...

Abstract Ultra‐low frequency (ULF) wave observations across the heliosphere often rely on sign of correlations between plasma (density/pressure) and magnetic field perturbations to distinguish fast slow magnetosonic modes. However, assumptions behind this magnetohydrodynamic result are not always valid, particularly within magnetosphere which is inhomogeneous supports standing waves along geoma...

In this paper, we first analyze the horizon structure of Van der Waals (VdW) black hole and then investigate its shadow in absence a plasma medium as well presence homogeneous medium. We find that both parameters b have significant effect on hole. also observe radius increases when parameter σ=ωpω∞ (the ratio frequency photon frequency) inhomogeneous is larger than vacuum discuss strong gravita...

Abstract The dynamics of a type III electron beam generating Langmuir wave turbulence and subsequent electromagnetic emissions is studied owing to two-dimensional Particle-In-Cell simulations performed in both homogeneous randomly inhomogeneous solar wind plasmas. Important differences the are highlighted between cases, due waves’ transformations on density fluctuations. This paper studies weak...

Revise and shorten the abstract as follows: Carbyne-enriched nanomaterials are of current interest in nanotechnology-related applications. The properties these greatly depend on their production process. In particular, structural self-organization auto-synchronization nanostructures typical phenomena observed during growth heteroatom-doping carbyne-enriched nanostructured metamaterials by ion-a...