Laser ionization in β decay studies of Zn and Mn nuclei

Resonance ionization laser ion source (RILIS) technique has been used in the β-decay studies of ⁵⁹Mn and ⁵⁸Zn. The importance of the RILIS for production of these elements is discussed. The properties of the low-lying levels of the studied nuclei are discussed. This revised version was published online in August 2006 with corrections to the Cover Date.     

A device based on a grazing-incidence grating for tuning the frequency of a single-mode dye laser

Numerical simulation methods have been used to study and optimize the mechanism based on grazing incidence of the radiation on a diffraction grating for scanning the frequency of a single-mode dye laser. The tuning mechanism uses a glass wedge (an optical reducer) placed in the laser cavity. It is shown that when this cavity is used it is possible by a special choice of parameters to avoid longitudinal mode hopping as the laser frequency is scanned over a broad range. Zh. Tekh. Fiz. 67, 53–57 (March 1997)     

Diagnostics of two-dimensional fractal structures using scanning coherent beams

A method of studying two-dimensional random structures such as amplitude screens with fractal properties using scanning focused and wide collimated beams is discussed. An analysis is made of the interrelation between the parameters of the structure functions of the intensity fluctuations detected at a fixed observation point and the structural characteristics of the particular screens. Results of experimental investigations of model samples of random amplitude screens with fractal properties are presented. Zh. Tekh. Fiz. 67, 101–112 (November 1997)     

Transition radiation detectors—“B” trackers manufactured at JINR for ATLAS LHC inner detector

The results of the creation of a transition radiation detector—a “B” tracker on the basis of thin-walled drift tubes (straw tubes) for the inner detector of the ATLAS Large Hadron Collider (LHC)—are presented. The results of preliminary detector testing are described. The basic components and procedures of assembly for 17 eight-layer TRT modules manufactured at JINR are described.     

The study of grain orientation distributions and grain boundary misorientation distributions in 304 and 316L stainless steels

Orientation distribution functions in two recrystallized austenitic stainless steels (AISI types 304 and 316L) with known grain boundary misorientation distributions have been studied. Previously obtained data on grain boundary spectra in these steels have been re-examined and analyzed from the point of view of texture analysis.The results obtained have shown that there is no unambiguous relatonship between grain boundary misorientation distribution and grain orientation distribution (ODF) determined by the X-ray analysis in the materials under study. This ambiguity is due to the following reason. In the grain boundary misorientation statistics only nearest-neighbor grains are taken into account, but in the orientation distribution function orientations are averaged over the entire volume of the specimen independent as to whether the grains are adjacent or not. Two main results were established for the steels under study: (i) Textures of the two steels differ, though their grain boundary misorientation distributions are similar; and (ii) misorientations of the majority of grain boundaries can be described as rotations about the axes close to 110.     

Evolution of the Structural-Phase State of a Titanium Alloy of the System Ti–Al–V–Mo During Formation of an Ultrafine-Grained Structure Using Reversible Hydrogenaтion

Russian Physics Journal - Using methods of electron-microscopy and x-ray structural analysis, we have investigated peculiarities of the evolution of the structural-phase state of an alloy of the...     

Platinum-containing catalyst supported on a metal-organic framework structure in the selective oxidation of benzyl alcohol derivatives into aldehydes

The platinum catalyst supported on the metal-organic framework structure MOF-5 is usable in the selective oxidation of vanillyl and piperonyl alcohols into the corresponding aldehydes.