Shcherbakov, A A | Search NASA

DOE OSTI2010

Distribution of the coulomb microfield inside an ion cluster

The microfield distribution function in clusters is investigated numerically by the molecular dynamics and Monte Carlo methods. The results obtained are compared with the microfield distribution in an unbounded plasma. The calculated distributions are shown to have the same asymptotic forms. The position of the maximum and the existence of additional extrema depend on the size and type of cluster. The dependence of the probabilistic average and dispersion of the microfield distribution function on the number of particles in the cluster is studied.

70 PLASMA PHYSICS AND FUSION TECHNOLOGY↗

DOE OSTI2010

Fast numerical method for modelling one-dimensional diffraction gratings

Based on the generalised source method, a new method for calculating the light diffraction on one-dimensional dielectric diffraction gratings with an arbitrary profile is proposed. The method is an alternative to the widely used Fourier modal method because it possesses the same possibilities in defining different grating profiles; however, it has a significant advantage in calculating complex-shaped gratings because it requires many fewer mathematical operations. The applicability of the method is shown by comparing the calculation results by this method with the results obtained by the conventional methods of light diffraction calculation on the gratings. (laser applications and other topics in quantum electronics)

71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSIC↗