On some characteristic properties of ATR liquid light conductors

Electronic spectra of aqueous solutions of the malachite green dye have been measured by liquid and solid spectroscopy. Particular characteristics of the light conductor itself have been shown to have no considerable effect on the results of the experiment.     

Feasible Design of a Free Electron Laser Based on the Smith–Parsell Effect

A free electron laser design is considered in which coherent radiation is generated during the flight of a bunched electron beam near a periodic metal target (Smith–Parsell radiation). If the target (array) is placed in a special resonator, optical feedback can be realized. It is proposed to use an array made of thin conductive strips separated with vacuum gaps, since the radiation output in this case is much higher than that attainable with conventional arrays. Varying the array parameters, one can choose the necessary direction and required spectral distribution of the Smith–Parsell radiation. When radiation is generated in the direction normal to the trajectory of the electron beam, the array acts as one of the resonator mirrors.     

Stimulated Smith-Purcell radiation

JETP Letters - The design of free-electron lasers (FELs) based on submillimeter-range undulators involves difficulties associated with the fabrication of undulators with a very small period. To do...     

Experimental Facility for Investigating Polarization Bremsstrahlung in the Optical and X-ray Ranges Based on a 6-MeV Microtron

The parameters of an experimental facility based on a 6-MeV microtron are given. In addition to the microtron, the facility includes a beam transport channel, a scattering chamber with a goniometer, detectors of different types, and a system of data collection and processing. A program of immediate future experimental investigations is outlined.     

Influence of various factors on chemical decomposition of oxyethylated isononylphenols

Oxidative decomposition of difficultly biodegradable nonionic surfactants, oxyethylated phenols with various degrees of oxyethylation (Neonols AF 9-6, 9-10, 9-12), was examined. The initial rate and extent of the oxidation depend on the degree of oxyethylation, anion of the iron salt added, and temperature.     

Experimental observation of parametric X-ray radiation directed along the propagation velocity of relativistic electrons in a tungsten crystal

Parametric X-ray radiation (PXR) due to dynamic diffraction of relativistic electrons is experimentally observed at small angles to the propagation velocity of electrons in a tungsten crystal. The specific features of the experimental method are described, and forward PXR reflections from two crystallographic planes of tungsten are reliably measured.     

L-lactide ring-opening polymerization on a magnesium catalyst based on acenaphthene-1,2-diimine ligand: Development of biocompatible materials for osteoplasty

Russian Journal of Applied Chemistry - Isotactic poly-L-lactide was prepared by L-lactide ring-opening polymerization in tetrahydrofuran solution in the presence of a magnesium complex derived from...     

Optical Polarization Radiation of Relativistic Electrons in Conducting Targets

A theoretical model and results of experiments on optical polarization radiation of relativistic electrons from conducting targets performed on the synchrotron and microtron of Nuclear Physics Institute at Tomsk Polytechnic University are reported. The measurements of spectral characteristics of resonance polarization radiation in periodic targets over a wide range of electron energies (both in the Smyth–Purcell geometry and for different angles between the targets and the direction of the electron beam) show reasonable agreement with theoretical estimates.