The response of the local RF current measured at limiters of 3-strap ICRF antenna to variations of power balance and phasing at fICRF=30MHz agrees qualitatively well with EM calculations by TOPICA and RAPLICASOL codes. Measurements of tungsten sputtering yield and DC current at the limiters correlate strongly with the local RF current. In contrast to findings for the 2-strap antennas, values of...

Suppression of turbulence has been observed in the Large Plasma Device in the presence of flow shear. Using an iris-like setup of biasable metal plates called limiters, azimuthal flow near the edge of the device was achieved. The limiters extend from the inner surface of the device inward, 28.5cm from the central axis, and are set from 0 V to 200 V above the anode. Multiple probing methods incl...

Learning to integrate non-linear equations from highly resolved direct numerical simulations has seen recent interest for reducing the computational load fluid simulations. Here, we focus on determining a flux-limiter shock capturing methods. Focusing flux limiters provides specific plug-and-play component existing Since their introduction, an array of been designed. Using coarse-grained Burger...

We consider finite volume methods for the numerical solution of conservation laws. In order to achieve high-order accurate numerical approximation to non-linear smooth functions, we introduce a new class of limiter functions for the spatial reconstruction of hyperbolic equations. We therefore employ and generalize the idea of double-logarithmic reconstruction of Artebrant and Schroll [R. Artebr...

A new code, named MAP, is written in FORTRAN language for magnetohydrodynamics (MHD) calculation with the adaptive mesh refinement (AMR) and Message Passing Interface (MPI) parallelization. There are several optional numerical schemes for computing the MHD part, namely, modified Mac Cormack Scheme (MMC), Lax-Fridrichs scheme (LF) and weighted essentially non-oscillatory (WENO) scheme. All of th...

For numerical simulations to be e;ective tools in plasma propulsion research, a high-order accurate solver that captures MHD shocks monotonically and works reliably for strong magnetic =elds is needed. For this purpose, a characteristics-based scheme for the MHD equations, with "ux limiters to improve spatial accuracy, has been developed. In this method, the symmetric form of the MHD equations,...

New systems are required for optical limiting against broadband laser pulses. We demonstrate that the association of non-linear scattering from single-wall carbon nanotubes (SWNT) and multiphoton absorption (MPA) from organic chromophores is a promising approach to extend performances of optical limiters over broad spectral and temporal ranges. Such composites display high linear transmission a...