A high-accuracy method of computation of x-ray waves propagation through an optical system consisting of many lenses - Publication - MOST Wiedzy

Search

A high-accuracy method of computation of x-ray waves propagation through an optical system consisting of many lenses

Abstract

The propagation of X-ray waves through an optical system consisting of many X-ray refractive lenses is considered. Two differential equations are contemplated for solving the problem for electromagnetic wave propagation: first – an equation for the electric field, second – an equation derived for a complex phase of an electric field. Both equations are solved by the use of a finite-difference method. The simulation error is estimated mathematically and investigated. The presented results for equations show that in order to establish a high accuracy computation a much smaller number of points is needed to solve the problem of X-ray waves propagation through a multi-lens system when the method for the second equation is used. The reason for such a result is that the electric field of a wave after passing through many lenses is a quickly oscillating function of coordinates, while the electric field phase is a quickly increasing, but not oscillating function. Therefore, a very detailed difference grid, which is necessary to approximate the considered electric field can be replaced by not such a detailed grid, when computations are made for the complex wave of the electric field. The simulation error of both suggested methods is estimated. It is shown that the derived equation for a phase function allows effiient simulation of propagation of X-rays for the multi-lens optical system.

Details

Category:
Articles
Type:
artykuły w czasopismach recenzowanych i innych wydawnictwach ciągłych
Published in:
TASK Quarterly no. 20, pages 171 - 186,
ISSN: 1428-6394
Language:
English
Publication year:
2016
Bibliographic description:
Kshevetskii S., Wojda P.: A high-accuracy method of computation of x-ray waves propagation through an optical system consisting of many lenses// TASK Quarterly. -Vol. 20., nr. 2 (2016), s.171-186
Verified by:
Gdańsk University of Technology

seen 16 times

Recommended for you

Meta Tags