OAK jurnallaridan yig‘ilgan 129907 ta ilmiy maqola: sarlavha, mualliflar, annotatsiya, kalit so‘zlar, DOI va tayyor iqtibos formatlari.
Results of comparative analysis of the formation processes of 7 Be nuclei and (α+3 He) system in channels with formation of alpha-particles in 16Op-collisions at 3.25 A GeV/s are presented. It is obtained that the two…
The observational data of long-term continuous monitoring of the gravitationally lensed system В1422+237 are analyzed. A brief description of the photometric method for image processing is given, light curves are…
In the present work the peculiarities of ion implantation and colliding particles mass ratio influence on the ranges, energy loss and profiles of distribution for 1−5 keV P+ ions channelling in Si(110) and SiC(110) at…
The results of thermodesorption thermoionic (surface-ionization) spectrometry (TDTIS) investigations of synthetic cannnabinoid АВ-Chminaca (a derivative of indazole) and seized smoking mixtures on diverse matrixes have…
The application of synergetics as a modern transdisciplinary science in radiation physics is discussed. It is shown that the basic concepts of synergetics are very well applicable to the description of the number of…
Surface-enhanced Raman scattering (SERS) technique is an important and powerful analytical tool, which has attracted much attention for environmental monitoring, chemical analysis and biomedical research. In this paper…
The volcano-type size dependence of the extraordinary catalytic activity of gold nanoparticles in CO oxidation is discussed on the basis of combination of the d-band model, the jellium model of metal clusters and the…
Anisotropy of attenuation of acoustic waves in photorefractive BSO and BGO crystals has been studied in the frequency range of 0.4−1.6 GHz. The anisotropy parameters determined by the imaginary constants of BSO and BGO…
Significant oscillations of the spectral distribution of the idler pulses in the optical parametric amplification of chirped laser pulse have been observed experimentally. On the base of the obtained simple analytical…
The formation of pseudomorphous GeSiSn layers directly on Si have been investigated. The transition from two-dimensional growth regime to three-dimensional of the GeSiSn film on Si(100) was studied for different…
Room temperature photoluminescence (PL) properties of vertically aligned and spindle-shaped, randomly oriented ZnO nanorods synthesized by using a low temperature hydrothermal method are studied. In air, the vertically…
Laser driving technology is an important technology in high energy physics, shock wave physics and explosive initiation application. In this paper, velocities and impact stresses of four types of laser-driven flyers…
The purpose of our research is calculation of capacity and energy of an independent solar power station. Theoretical calculations of the basic power characteristics of the solar panels established in territory of…
The possibility of achieving high efficiency of converting solar energy into laser radiation energy on the basis of the active element Nd: Cr: GSGG in the form of a thin slab allowing providing an effective heat output…
A concept is proposed of forming the effective generation of a plasma flux by a vacuum-arc discharge in a substrate, with the functional systems of initiation of a vacuum-arc discharge with the necessary…
For the first time, the refractometry method was used to determine optical characteristics and concentration features of aqueous solutions of tetrahydrofurane, dimethylformamide and ethanol. Refractive indices of…
Conversion process of energy of solar radiation into electricity is analyzed from point of view of mass, charge and energy transport. It is shown that, as in all other kinds of energy sources, there are limitations for…
The processes of formation of thin nanosized films of Ba silicides and alkaline elements during their low-energy and high-dose implantation in Si(111) and Si(100) have been studied using electron spectroscopy…
The results of decreasing the epitaxy temperature up to 900−1100 K to produce sufficiently perfect films under vacuum deposition and by ion stimulation have been presented.
The influence of a thermal annealing on electric conduction of silicon monocrystals doped by nickel has been studied. Also, an analysis of the morphology of impurity microinclusions under the influence of heat treatment…
The absorption of linearly polarized light in a semiconductor dimension-quantized well related both to optical transitions between branches of light and heavy holes and between dimension-quantized subbands has been…
The article presents the latest status of the Maidanak 1 m telescope, instruments and the related facilities of the Observatory as well as the science projects. The renovation of the 1 m telescope of Carl Zeiss…
The purpose of this paper is experimental study of amorphization of the quartz crystal structure by irradiation of protons of certain doses. It has been shown that in the damaged layer of the crystal subjected to…
In the paper, the DLTS method is used to study the effect of dysprosium atoms on the efficiency of radiation defects formation in n-Si irradiated with γ-quanta 60Co. It is shown that formation of A-centers dominates in…
Experimental results of acoustic spectra of 1,4-butandiol and its mixtures in water and in H-butanes are presented in temperature from 293°K to 333°K and frequencies from 1 MHz to 7.16 GHz. Possible molecular mechanisms…
The temperature dependence of the coefficient of thermal conductivity of cyclohexanol and isobutyl alcohol in the range 293−363 K was studied. It is shown that a linear dependence of the thermal conductivity on…
The diffusion coefficient and ultrasonic attenuation of 2,6-dimethylpyridine-water mixtures of critical composition have been measured without and with alkali halides added. The critical exponent of the fluctuation…
It was found that recombination properties of the p-Si<B,Ni> at the doses up to∼1×108 R are more stable than in the control silicon. It is possible, this fact is connected with the different degree of the…
The main physical regularities of self-organization of fullerene C60 molecules in benzene are established. Physical mechanism of controlled synthesis of fractal nanosized aggregates of C60 in nonequilibrium solutions…
By the X-ray diffraction method, the formation of copper-oxygen nanocrystallites and the locations of copper atoms in three positions in doped silicon single crystals (in the interstitial position in the lattice matrix…
The results of quantum-chemical calculations of the intracrystalline potential relief profile in a nanolattices of a superionic LaF3 crystal containing 1200 ions, measuring 3.5×2.0×2.2 nm, respectively along the…
The excitation cross section of isomeric states in the (γ, n) and (n, 2n) reactions on the 76Ge nucleus was studied by the induced-activity method. The cross section for the 76Ge(γ, n)75mGe reaction was first determined…
For the first time under conditions of 4π-geometry, experimental data have been obtained on one mechanism of the cumulative proton′s formation in oxygen nuclei interactions in a hydrogen chamber at high energies. An…
In this work the theoretical investigation of dynamics of magnetic flux prenetration into superconductors with nonlinear voltage-current characteristics and in conditions of creeping flow has been presented. The exact…
The results of investigation of the adsorption and surface ionization (SI) of imipramine and amitriptyline molecules on oxidized tungsten in stationary and non-stationary conditions are presented. High-vacuum…
With using the method of Ba+ ion’s implantation with E0=15 and 30 keV the triplex system CdTe/Cd0,5Ba0,5Te/CdTe has been received. The optimum modes of ionic implantation and annealing of their formation are defined. It…
A theoretical explanation of decreasing energy excitation of surface and volume plasma oscillations of valence electrons in silicon Si (111) at implantation of ions B, Ва and alkaline elements with large dose D>1016…
The electrical characteristics of the Au-ZnxCd1-xS-Mo film structure with a narrow spectrum of photosensitivity in the ultraviolet part of the radiation spectrum of 300−400 nm are investigated. It is established that in…
Dynamic strain conductivity and physical mechanisms of its manifestation under impulse pressure effects in samples Si <Mn> and Si <Zn> are studied in accordance with the degree of their compensation and the…
In this paper, photoluminescence properties of ZnO nanorods grown by a low-temperature hydrothermal method without seed layer have been investigated. Nanorods possess hexagonal form and their length and diameter are…
The results of quantum-chemical calculations of the profiles of the intracellular potential relief are presented for an elementary disordering event in different parts of the LaF3 crystallite lattice of size 3.5×2.0×2.2…
The temperature dependence of the energy gaps in semiconductors is considered. In the approximation of the effective mass method, a change in the width of the forbidden band due to the interaction of electrons with…
This paper shows inadequacy of contemporary conceptions of physics on nature of thermoelectric phenomena (Sebeck, Peltie and Thomson effects), based on linear nonequilibrium thermodynamics, to experimental data having…
The stability of many countries and whole regions has been shaken by conflicts laden with interethnic and inter-confessional tensions, religious extremism, and aggressive separatism. The danger of the proliferation of…
Ukraine, the second largest country by area in Europe after Russia covering 603,550 square kilometers territory, is located in Eastern Europe with population of about 42.5 million.1 After getting independence in…
The economic security is a relatively new issue for many newly independent states. Firstly, before disintegration of the Soviet Union the such issue was not on the agenda at all and, accordingly, the problem of its…