Composite X-ray Waveguide-Resonator as a Background for the New Generation of the Material Testing Equipment for Films o
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Composite X-ray waveguide-resonator as a background for the new generation of the material testing equipment for films on Si substrates V.K. Egorov, E.V. Egorov IPMT RAS, Chernogolovka, Moscow district, Russia 142432 ABSTRACT Experimental research of the first composite planar X-ray waveguide-resonator (CPXWR) is presented. Model for an X-ray beam penetration across CPXWR is proposed. The model shows that the experimental data can be interpreted as the effect of the X-ray beam angle tunneling across small gap between two waveguide-resonators aligned consecutive. The assumption been made that the effect may open the key for the mechanism understanding of a hard electromagnetic radiation beam's management. Possibilities of the CPXWR practical using for creation of the X-ray new generation equipment for testing of thin film coating on Si substrates are discussed. INTRODUCTION One of the most practical problems for the radiation beam using is the search of ways to manipulate of the beams. In some instances the operation with the radiation beams is relatively simple task. One can change the energy and direction of a penetration for charge partical beams in results of the electric and magnetic field switching. Optical visible radiation can be lightly managed through the use of Faraday and Kerr cells and transported by fiber optical waveguides. At the same time, possibility of an X-ray beams manipulation is very limited. There are two fundamental phenomena allowed to modify the X-ray beam penetration: the Bragg reflection and the total external reflection [1]. In the result, we have the set of X-ray transformers: BraggFresnel zone plates [2], X-ray polycapillary devices [3], X-ray crystal [4] and multilayer monochromators [5], X-ray refractive lens [6]. In the last time the planar X-ray waveguideresonator (PXWR) units are appeared [7]. The above-listed procedures and devices present direct methods to influence on an X-ray beam. Inasmuch as the X-ray wavelength is very small, this influence is not great. In this connection it should be very attractive to realize nondirect methods of an X-ray beam manipulation, for example, across the influence on the standing wave interference field. One would expect high efficiency of the influence, because the standing wave period is longer as an X-ray wavelength [8]. This works is devoted the attempt to expose on the standing wave interference field in the clearance of PXWR in an effort to decrease the ray divergence in its emergent beam. MAIN CHARACTERISTICS OF THE WAVEGUIDE-RESONATOR PXWR is formed by two parallel polished dielectric plates with a small clearance (slit) between them. The slit magnitude is defined by conditions of the X-ray standing wave (XSW) formation in space between the plates in result of incident and reflected beam's interference. Figure 1a shows, how the X-ray beam in form a plane wave creates in condition of consecutive total reflection XSW partial areas when the slit size is too large. The period of the arising XSW is defined by the wavelength magnitude of X-ra
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