Response of acousto-optic delay line to rectangular input signal

It is researched an influence of cross section size of incident to lightsensitive photoreceiver surface radiation on pulse shape in acousto-optic delay line with direct detection. Corresponding transient characteristic was obtained, it was used for output response analysis to input pulse signal with different duration.     

A generalized hydraulic resistance coefficient

A generalization of the resistance law for rheologically stationary liquids is considered for flow in tubes and channels of various geometry.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 36, No. 1, pp. 20–25, January, 1979.     

Reduction of abrasive wear of plunger pairs in sucker-rod oil pumps

Translated from Khimicheskoe i Neftyanoe Mashinostroenie, No. 2, pp. 15–16, February, 1988.     

Effective efficiency coefficients for standard-free analysis of solid substances by the method of mass spectrometry of secondary ions

Mass-spectrometry research of secondary ion emission (MSSI) products is a direct method of analysis of the element and isotope content of conducting and nonconducting solid substances. Similar to other methods of mass-spectrometric analysis, MSSI also has some analytical characteristics that enable one to detect a simple reaction between a concentration of the analyzed element and the registered initial signal.     

New quaternary compound PbSbBiS<Subscript>4</Subscript>

The PbSb₂S₄-PbBi₂S₄ join of the PbS-Sb₂S₃-Bi₂S₃ system has been studied using physicochemical characterization techniques and its phase diagram has been mapped out. The join has PbSb₂S₄-based solid-solution series, which extends to 20 mol % PbBi₂S₄. At a 1: 1 ratio of the constituent sulfides, there is a congruently melting compound with the composition PbSbBiS4. PbSbBiS4 single crystals have been prepared by chemical vapor transport growth. The unit-cell parameters of PbSbBiS₄ (orthorhombic structure) are a = 15.72, b = 11.36, and c = 4.41 Å.     

Some physical processes on surfaces of dielectrics exposed to an electrical gas discharge

The physical processes on the surfaces of the dielectric and composite materials were studied under the influence of an electric discharge in media of different gases. It is shown that the effect of an electrical discharge on the surface of the material can significantly change its properties. In addition, the degree of these changes depends on the composition of the gaseous media in which the discharge occurs. It was experimentally found that the decomposition products of sulfur hexafluoride (SF₆) exposed to an electric discharge form the most active media in a closed volume, while exerting a significant impact on the surface of the materials in contact, thereby altering their physical and chemical properties.