Specific Features of Radiation Inheritance

Specific features of the radiation inheritance of metals and alloys are analyzed. A conclusion on the irreversible changes in the structure of materials after irradiation is drawn. Mechanisms of inheriting the radiation effects in the process of high-temperature transformation of materials are suggested. The concentration microinhomogeneities initiated in the preliminary irradiated defect structure of the material are shown to be the genetic factor of the radiation inheritance.     

Formation of “Fuzz” on the Pre-Nitrided Tungsten Surface

Experiments are carried out on a simulation stand with a plasma-beam facility in order to study the formation of “fuzz” on the initial and pre-nitrided tungsten surface. The parameters of the experiments of the nitriding and formation of the tungsten “fuzz” are given. The results of materials science study are shown. The characteristics of the tungsten “fuzz” on the nitrided and non-nitrided tungsten surfaces are determined and the results obtained are analyzed.

     

New Type of Quantum Emitters Related to Dislocations in Crystalline CdZnTe Revealed by Laser-Based Spectroscopy

Based on the measurements of spectra and polarization of low-temperature (5K) microphotoluminescence excited by stabilized continuous-wave laser pumping, we find a new type of isolated emitters formed due to the dislocations in crystalline CdZnTe. For an emitter of this type, zero-phonon luminescence is located 30–50 meV above the usual dislocation luminescence and is subjected to giant fluctuations of spectral position (~10 meV) and intensity. A noticeable degree of linear polarization in the plane containing <110> directions indicates the strongly anisotropic nature of the corresponding electronic states and confirms their connection with dislocations.     

Study of the Interaction of Plasma with Beryllium That Is a Candidate Material for the First Wall of a Fusion Reactor

The experimental conditions for treatment of a candidate material of the first wall, beryllium, by the plasma have been determined. The plasma parameters obtained using the simulator with a plasma-beam setup during the irradiation of samples as well as the results of material studies obtained by scanning electron microscopy and energy-dispersion analysis of the beryllium surface layer have been considered.     

Structural Modification and Erosion of Plasma-Irradiated Tungsten and Molybdenum Surfaces

Technical Physics - Data for the structural modification and erosion of plasma-irradiated tungsten and molybdenum surfaces are reported. It has been found that the irradiated specimen surface shows...