V.A. Murashova

Peculiarities of photon transmission through capillary systems

Abstract In this paper a theoretical model for calculation of X-ray photons characteristics under passage through capillary systems is described. The model is based on a numerical solution of a wave equation. It is shown that recently discovered interference effect under multiple reflection of X-rays is a display of wave properties of X-rays. In this report an explanation of the observed phenomenon is given.

Investigation of sensitometric characteristics of X-ray photoemulsions in the spectral range of 15–80 Å

Abstract An investigation of the sensitometric characteristics of X-ray films RAR 2497, SB-2, 101-01 (Kodak), D-7 (Agfa-Gevaert) and UFSh-0 (GNIIKhFP) has been carried out. These films are widely used in scientific research with different types of X-ray sources. The investigation was realized with the aid of a transmission grating spectrograph. An S-60 electron accelerator (P.N. Lebedev Physical Institute) was used as the source of X-ray radiation. The characteristic curves for different wavelengths (within the mentioned range) are presented, as well as the spectral dependences of absolute sensitivity and contrast for the tested films.

Interference phenomenon under focusing of synchrotron radiation by a Kumakhov lens

Abstract Results of experimental and theoretical studies on focusing of synchrotron radiation by means of capillary lenses are presented. For the explanation of the interference effect observed the wave the channeling theory is applied.

Investigation of synchrotron-radiation beam turning using a cylindrical surface

AbstractWe report theoretical and experimental investigations of the x-ray properties of concave cylindrical mirrors for the soft x-ray (SX) band. Elements of this type facilitate solutions of many problems in the control of synchtrotron-radiation (SR) beams. These include: operation of SR channels; production of a vertical SR beam; transmission of an SR beam to another horizontal plane (to the second story); effective filtering-out of short-wave radiations. We describe the main features of deflection of SX beams by concave surfaces. The angular and spatial distributions of the radiation intensity at the exit from a cylindrical mirror are analyzed by the tridiagonal method. Experimental results are presented on the rotation of an SR beam through 90° by a cylindrical mirror with a reflecting carbon coating. The efficiency of the SR transfer was investigated in wide range

Four‐channel x‐ray spectrometer on a transmission grating with a combined system of detection

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Study of polarization properties of multilayer X-ray mirrors

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Specific features of poly(methyl methacrylate) irradiation

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X-ray spectrometer using a free-standing transmission grating and a microchannel plate as detector for laser plasma studies

∼10–100Å, and furthermore the angular and spectral distributions at the exit of the rotary mirror were measured. The influence of a thin carbon film covering the refecting surface on the x-ray and optical parameters of the cylindrical lens are discussed in the conclusion.