A three-dimensional Gaussian-beam ray-tracing program for designing interferometer/polarimeter plasma diagnostics

A three-dimensional Gaussian-beam ray-tracing program for designing interferometer/polarimeter plasma diagnostics

A three-dimensional Gaussian-beam ray-tracing program for designing interferometerÕpolarimeter plasma diagnostics

We have developed a three-dimensional Gaussian-beam ray-tracing program to aid in the design of infrared, far-infrared, and millimeter wave interferometer and polarimeter diagnostic systems for magnetic confinement fusion relevant plasma physics experiments. An overview of the program is presented along with a description of the ray-tracing algorithm. A model is developed for the case of diffra...

X-ray plasma diagnostics

Results and methods are given for the investigation of hot laboratory and astrophysical plasmas parameters in a soft X-ray region 1 = 1-40 A. Line spectra of multiply charged ions are usually studied exper~mentally, and relative Intensities of spectral lines are measured. Achievements of modern physics of electronion collisions and theoretical spectroscopy make it possible to obtain for transie...

Three-Dimensional Plasma Etching Simulation using Advanced Ray Tracing and Level Set Techniques

We present three-dimensional simulation techniques for plasma etching processes. Models based on Langmuir-type adsorption and on ballistic particle transport at feature scale can be efficiently solved in three dimensions. Surface coverages are self-consistently calculated. The local sputter rates of ions and the fluxes of neutrals are computed using modern ray tracing algorithms. In this way an...

Three-dimensional ray tracing on Delaunay-based reconstructed surfaces.

A method of ray tracing for free-form optical surfaces has been developed. The ray tracing through such surfaces is based on Delaunay triangulation of the discrete data of the surface and is related to finite-element modeling. Some numerical examples of applications to analytical, noisy, and experimental free-form surfaces (in particular, a corneal topography map) are presented. Ray-tracing res...