A Channel for Neutron Flux Measurement

The design principles of a channel for measuring fluxes of thermal neutrons in a nuclear-reactor control and protection system are considered. The channel consists of a fission chamber, a set of boron-containing gas-filled ionization chambers, and an electronic unit that ensures a counting rate of fission pulses of up to 1 × 10⁶ s^–1. It is shown that the widest linear range is achieved in channels equipped with a fission chamber and a gas-filled ionization chamber with electrodes coated with natural boron. The channel allows for measurements of the thermal-neutron flux density in a range of 0.5 to 5 × 10¹¹ cm^–2 s^–1.     

Ion Nitriding of Titanium Coatings Obtained with the Help of a Liquid-Metal Carrier

Metal Science and Heat Treatment -     

Deposition of Coatings on Sintered Materials by the Method of Chemicothermal Treatment of the Molten Pool

Metal Science and Heat Treatment -     

Use of X-Ray Thickness Gauges in Manufacturing Rolled Non-Ferrous Metals

A technique of taking into account modifications of the chemical composition of alloys in measuring the thickness of rolled non-ferrous metal products by X-ray thickness gauges is described. The possibilities and perspectives of using RIT10 X-ray thickness gauges in rolling mills with a wide assortment of treated non-ferrous metals and their alloys are demonstrated. The accuracy reached in measurements of tested objects of different thicknesses and chemical compositions is estimated and factors affecting the accuracy of device readings are indicated.     

Monitoring the Electron-Orbit Shift and Radiation Beams

A system for performing television monitoring of the position of the synchrotron radiation beam is discussed. The results of measurements of the stability of the beam position in several user channels are presented. It is shown that further work is needed to determine and eliminate the factors causing beam displacement. The results of measurements performed by different methods of the electron-beam dimensions in the accumulator are presented.     

Effect of the Porous Structure of Sintered Materials on Diffusion Processes in the Formation of Nickel and Aluminum Coatings

Metal Science and Heat Treatment -