G. K. Vasil'ev

Limiting Phenomena in the Reaction of Fluorine with Hydrogen

Reactions involving energy branching and deceleration by the end product were studied using as an example the reaction of fluorine with hydrogen. It has been shown that for such reactions, entrance into the autoignition region determined by static conditions (reagent concentration, pressure, and temperature) due to variation in the pressure of the mixture may be or may not be accompanied by mixture autoignition. The parameter determining the behavior of a particular mixture is the rate of variation in the mixture pressure. A process of fast (in the range of seconds) preparation of fluorocarbon mixtures with minimal yield of hydrogen fluoride is substantiated.

Divergence and polarisation of radiation of a wide-aperture chemical DF laser with an unstable resonator

Influence of a plane-parallel plate, placed inside an unstable resonator and entirely overlapping the beam cross section, on the polarisation and divergence of wide-aperture DF-laser radiation is studied at various angles of plate inclination to the resonator axis. It is shown that the plate inside a resonator has no effect on the radiation divergence and only requires a corresponding shift of a convex mirror in order to keep the resonator confocal. A noticeable change in the radiation polarisation has been observed only at angles of plate inclination greater than 20°; at angles of above 45° the radiation becomes actually linearly polarised.

Thermal Decomposition of Xenon Tetroxide at 490–780 K

The decomposition of XeO4 was studied over the temperature range 490–780 K. A reaction mechanism was proposed. A conclusion on the high vibrational excitation of O2 molecules formed in the elementary reaction O + XeO4 → O2 + XeO3 and the branched-chain character of the decomposition with branching in the reaction O + XeO3 → 2O + O2 + Xe was drawn.

Kinetics and Mechanism of the Reaction of Xenon Tetroxide with Carbon Disulfide

The dependence of the rate of the reaction of XeO4with CS2on the concentrations of reactants and diluent gases He, O2, and CO2was studied at room temperature. A reaction mechanism was proposed.

Mechanism of the Reaction of Xenon Tetraoxide with Hydrogen: A Photochemical Reaction

AbstractThe dependence of the rate of a photochemical reaction of XeO4with H2on the concentrations of H2and the diluent gases He and CO2is studied at room temperature. The results are compared with the data for the dark reaction. A mechanism with the elementary energetic branched-chain reaction OH

Absorption cross sections for HF laser lines due to traces of CO2, N2O, and CH4 in air

{\dot H}

Resistance of fluorine-hydrogen mixtures to chain self-ignition

(v) + XeO4→OH