Optical homogeneity of Ti:Sapphire crystals grown by horizontal directional solidification

We have found conditions for the growth of Ti:sapphire crystals with a uniform dopant profile by horizontal directional solidification (HDS) in protective gaseous atmospheres of different compositions at different pressures. The results demonstrate that the HDS process enables the growth of large Ti:sapphire laser crystals with high optical homogeneity and wavefront distortions in the range ??/10 to ??/5.     

Acoustic velocity in and density of binary helium-argon mixtures

The acoustic velocity in four different mixtures of the helium-argon system and the specific volume of two different mixtures of this system were measured over the 298.16–473.16°K temperature range under pressures from 50 to 400 MPa.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 39, No. 6, pp. 1090–1094, December, 1980.     

The condensation of steam from steam-water mixture on water jets at high pressure

A physical model for condensation of steam in water flow at high pressure is developed, and analytical dependences for calculating heat transfer are obtained, in particular as applied to the operation of a direct-contact feedwater heater for a new-generation reactor plant with lead coolant.     

Studies of a direct-contact feedwater heater at a fragment of the secondary coolant circuit of a new-generation reactor plant

Results obtained from experimental investigations of a direct-contact heater at an experimental installation simulating a fragment of a power unit’s secondary coolant circuit are presented, and a heat-transfer calculation model obtained on an experimental setup equipped with a small-scale model of a direct-contact heater is subjected to a comprehensive check.     

Velocity of sound in argon and in helium-argon and nitrogen-carbon dioxide gas mixtures at high pressures

The sound velocity is measured in argon and in mixtures of helium with argon and of nitrogen with carbon dioxide at pressures up to 800 MPa and at temperatures in the range 298.16–423.16°K.     

Methodology for Calculating Regulatory Indicators of the Reliability of Elements of Restored Gas Analytical Systems for Monitoring Chemical Environmental Pollution According to Experimental Reference Data

Theoretical Foundations of Chemical Engineering - A method has been developed for calculating the standard indicators of the reliability of elements of restored gas analytical systems for...