Design of multifunctional transducers of charged-particle beam parameters based on electron-beam diagnostic methods

Translated from Izmeritel'naya Tekhnika, No. 6, pp. 54–56, June, 1991.     

Properties of macroporous aluminosilicate ceramics modified with oligomeric aluminum phosphates

The chemical interaction between oligomeric aluminum phosphate solutions and the surface of macroporous aluminosilicate ceramics is studied. It is shown that the resulting composite material has markedly enhanced mechanical strength, with no significant reduction in porosity (80–85% of the initial value).Translated from Neorganicheskie Materialy, Vol. 41, No. 1, 2005, pp. 88–92. Original Russian Text Copyright © 2005 by Makatun, Ratko, Azarov, Azarova, Kitikova.     

Analysis of Damaging Factors during Fires in the Object “Cover”

The fire-technical and radiation states of the object Cover, and dangerous and harmful factors of a fire are described. It is shown that fires inside the object result in additional dose loads to fire fighters. 10 tables, 17 references.     

Study of a finned two-chamber vortex tube

A two-chamber module of a multichamber vortex-type cold-air machine is examined in four operating regimes.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 55, No. 3, pp. 363–366, September, 1988.     

Methodological and instrumental problems in high-precision in situ ellipsometry diagnostics of the mercury cadmium telluride layer composition in molecular beam epitaxy

Problems of high-precision in situ ellipsometry diagnostics of the composition of a mercury cadmium telluride (MCT) solid solution in the process of its growth using the molecular beam epitaxy are considered. The required precision was estimated for ellipsometry measurements aimed at determining the MCT composition with a permissible dispersion of ±0.003 mole fraction of CdTe. It has been revealed that for ellipsometers based on the static photometric scheme the instability of measurements is mainly caused by a random change in the directivity of the laser radiation. In combination with polarization nonuniformity over the area of the optical-section elements, this results in continuous drift of measured ellipsometric parameters. Based on these investigations, a high-stability laser ellipsometer has been designed. When used to monitor the in situ MCT layer growth by the molecular beam epitaxy, it allowed a decrease in the dispersion of the MCT composition by an order of magnitude from experiment to experiment and its precision to be maintained at a level of ±0.003 mole fractions of CdTe.     

A hydroacoustic complex and procedure for measuring hydrophysical parameters of the environment in shallow water areas

A procedure, hardware implementation, and software for remote monitoring of the hydrophysical parameters of the environment from data of the pulse hydroacoustic sounding on stationary horizontal routes in shallow water areas are described. Vertical distributions of profiles of the sound speed, temperature, and surface level were measured under natural conditions on the shelf of the Sea of Japan and in the Korea Strait in 2011. The results obtained in real time measurement with a high sampling rate can be used for prompt monitoring of the environmental parameters within the context of problems of ecological monitoring and protection against natural and man-caused threats in the shelf area, in bays, straits, closed seas, and artificial reservoirs.