On the bond forces in metals. II

For a number of metals with a cubic crystal lattice an estimate has been made of the pair interaction energy as part of the metallic bond energy obtained in [1] by a statistical method.     

Heat transfer in a two-dimensional crystalline complex (dusty) plasma

Heating and heat transfer were studied in a two-dimensional crystalline complex plasma at the kinetic level. The lattice was formed of microspheres levitated in a plasma sheath. One half of the crystal was heated anisotropically to obtain higher kinetic temperatures in one direction and heat conduction was observed in real time. It was found that the longitudinal phonons conduct heat better than the transverse. The thermometric conductivity coefficient was measured to be 53 mm2/s for longitudinal heating and 30 mm2/s for transverse heating. Heat decay lengths and energy exchange times between the temperature components were determined.     

Scattering in the attractive Yukawa potential in the limit of strong interaction

Scattering in the attractive screened Coulomb (Yukawa) potential in the limit of strong interaction is investigated. It is shown that the scattering occurs mostly with large angles. The corresponding momentum-transfer cross section is calculated. The results are applied to estimate the ion drag force acting on an isolated micron-sized grain in low-pressure bulk plasmas.     

Preparation and Properties of Some Poly-aluminum Organosiloxanes with Cyclonetwork Structures

Abstract

Poly condensation of aluminum butoxide with α, ω -dihydroxydi-methylsiloxanes having varied polymerization coefficients has been studied. Some kinetic dependencies in the generation of cyclonetwork poly(aluminum dim ethylsiloxanes) have been investigated and the rate constants of cross-linking reaction, depending on the chain length of initial α, ω-dihydroxypolydimethylsiloxanes, have been calculated.