5 September 2014 The finite-difference simulation of x-rays propagation through a system of lenses
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Abstract
The propagation of X-ray waves through an optical system consisting of 33 aluminum X-ray refractive lenses is considered. For solving the problem, a finite-difference method is suggested and investigated. It is shown that very small steps of the difference grid are necessary for reliable computation of propagation of X-ray waves through the system of lenses. It is shown that the wave phase is a function very quickly increasing with distance from an optical axis, after the wave has propagated through the system of lenses. If the phase is a quickly increasing function, then the wave electric field is a quickly oscillating function. We suggest and recommend using the equation for a phase function instead of the equation for an electric field. The equation for a phase function is derived.
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Sergey P. Kshevetskii, Sergey P. Kshevetskii, Pawel R. Wojda, Pawel R. Wojda, } "The finite-difference simulation of x-rays propagation through a system of lenses", Proc. SPIE 9209, Advances in Computational Methods for X-Ray Optics III, 92090Q (5 September 2014); doi: 10.1117/12.2060572; https://doi.org/10.1117/12.2060572
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