Основной целью «Узбекского физического журнала» является доведение до широкого научного сообщества новых результатов теоретических и экспериментальных исследований в различных областях современной физики, полученных учеными Узбекистана и зарубежных стран.
| Nashriyot | Ўзбекистон Республикаси Фанлар академияси |
|---|---|
| Shahar | Toshkent |
| ISSN | 1025-8817 |
| e-ISSN | 2181-077X |
| Tashkil etilgan | 1957 |
| Nashr davriyligi | annual international symposium on ph |
| Maqolalar soni | 430 |
| OAK holati | Ro‘yxatda |
This paper reformulates the stability structure of force-free magnetosphere of a rotating black hole discussed in paper [1]. We do some corrections in the main equations of relativistic magnetohydrodynamics written by…
The paper presents the results of thermoionic mass- and thermodesorption spectrometry of the drugs pregabalin (lyrica), carbamazepine and tropicamide. These drugs are widely used in illegal circulation and often abused…
Investigations are presented to identify the conditions of formation nanocomposites based on isotactic polypropylene (PP), maleinized PP (PPMA) and their mixtures with modified montmorillonite, Cloisite 20A (MMT…
The experimental results of measuring the yield of secondary ions and neutral calcium atoms under the bombardment of a CaCO3 target with cluster ions Bim + (m = 1−5) in the energy range 1−10 keV have been presented…
The analytical expression and the experimental curve of the exponential absorption spectrum of amorphous Se0.5S0.5 selenium-sulphur compound are compared. The parameters in the analytical expression for the exponential…
In the interactions of 10.6 A GeV gold nuclei with heavy emulsion nuclei, the characteristics of the transverse momenta of doublе-charged projectile fragments are studied. In collisions with small impact parameters…
Numerical results of investigation of the thermodynamic properties of the quasi-two-dimensional electron gas are presented, namely, the density of states, the temperature derivative of the chemical potential, and the…
The theoretical analysis of electric characteristics of the positive parity states in isotopes 158,160Gd has been carried out in the phenomenological model taking into account the Coriolis mixing of low-lying states in…
In this work, methods for determining the radiochemical purity and specific activity of the radionuclide lutetium-177 in the form of chloride are considered. These indicators were determined by thin layer and paper…
The article presents the results of the development and creation of a new pilot-industrial installation in the form of an inclined rotary kiln for processing fluoroammonium siliconcontaining materials. It is shown that…
Matrix elements of three- and four-photon optical transitions occurring between the subbandsof the valence band of semiconductor of cubic symmetry are calculated. In this case, the contribution of the simultaneous…
The appearance of thermoelectric power on heated p-n heterostructures containing on the surface of silicon substrates the deposited films from a Si-Ge solid solution heavily doped with titanium was experimentally…
The effect of reactor radiation on the luminescence properties and absorption spectra of single crystals of bismuth germanate Bi4Ge3O12 (BGO) has been studied. It is revealed that the degradation of the luminescent…
The excited collective states of deformed even-even nuclei with quadrupole and octupole deformations have been studied in the framework of the approximation of a nonaxial quadrupoleoctupole rotator. The matrix elements…
In this work, we have studied by numerical methods the evolution of non-radial oscillations of an unsteady disk, which is surrounded by a passive ellipsoidal halo with a uniform density. For this purpose, we have…
The paper presents the results of the detection of active variability and optical oscillations of the general light curves of gravitationally lensed quasars SDSS J1721+8842, SDSS J1433+6007 and SDSS J2145+6345 for the…
Complex qualitative and quantitative studies of the initial product, ethanol, used in the technological process for monosilane synthesis are carried out. Monosilane is subsequently used to obtain nanocrystalline silicon…
The emission of cluster ions of stoichiometric composition AnBm + (n+m≤12) has been studied under ion bombardment of boundary between two different mechanically joined metals A and B. It has been shown that along with…
Applying the set of experimental techniques including dose effect of 60Co γ-quanta, X-ray diffraction, local element analysis on microscale, scanning probe microscopy, optical and FTIR spectroscopy, the Cl deficit and…
Изучено влияние использования внешних преобразователей частоты на интенсивность люминесценция кристалла Nd:YAG. Кристалл освещался светодиодом с материалом Y3Al5O12:Ce3+ и без него в качестве внешнего преобразователя…
Frequency doubling of the first type of interaction (oo-e) of intense short laser pulses in crystals with a regular domain structure is numerically studied. The influences of the dispersion of the medium up to the third…
The paper presents expressions for the concentration of charge carriers in semiconductor nanowires. To find the concentration, the equation for the total number of particles is used. Using the Fermi-Dirac distribution…
The paper presents the results of an assessment of vertical profiles of wind velocity and water amount in the atmosphere over the Maidanak Astronomical Observatory. The height distributions of the meteorological…
This article provides detailed information about the observations of round-the-clock dynamics of the wind regime in different seasons of the year on the Suffa plateau, where RT-70 radio-telescope of the millimeter range…
In this work, the refractometry method was used to study of the molecular interactions and structural characteristics of dimethylformamide-ethanol and cyclohexane-ethanol binary mixtures. The refractive indices of…
The behavior of the chemical potential µ of a two-dimensional electron gas near the bottom of the miniband and far from it is considered. Low-temperature analytical formulas are obtained under the conditions of the…
The formation of the porous aluminum oxide on surface by the electrochemical method was investigated. This phenomenon is associated with simultaneous processes of formation and dissolution of the aluminum oxide in…
A new analytical exact solution of the Einstein gravitational field equations is proposed, which describes the equilibrium state of a spherical layer of anisotropic matter located in an external spherical symmetric…
The root-mean-square displacement of atoms in the new cubic refractory alloy Ti070Mo030C has been determined by the methods of least squares and full-profile analysis based on neutron diffraction data. The values of the…
By the complex methods of labeled atoms (169Er, 170Tm , 153Sm и 175Y b ), autoradiography, measurements of electrical conductivity and Hall effect, isothermal relaxation of capacitance and current, diffusion, solubility…
The results of laboratory experiments to study the effect of reverse bias with a duration of 60, 600 and 2000 s. on the parameters of solar cells (SC) based on an absorbing layer consisting of Cu, In, Ga and Se (CIGS)…
Four parameter group of transformations containing rotations and time translations is consi[1]dered due to spherical symmetry and stationarity of the space-time metric. It is found that there exists such a quartet of…
Within the framework of general relativity, a model of an equilibrium configuration of gravitating object is constructed. The spherical symmetric object studied consists of a spherical layer of a hypothetical…
The phase composition and subsurface current (90−580 K) were studied in expired scintillators made from doped LiF crystals after irradiation with 4 MeV electron fluencies 1013-1015 el/cm2 at beam current densities…
In the article, a fiber coupler based on twin-core fiber formed by the convergence of two light guiding cores by fusion and splicing of a small (several cm) region of the fiber has been proposed and experimentally…
For the first time, the features of the nucleation and further growth of nano- and micro-sized tubes based on C60 fullerene with a hexagonal shape, obtained by evaporation of an isolated drop of a solution of C60 in…
The technique of 3D conformal proton therapy was developed at the Medico-Technical Complex of the Laboratory of Nuclear Problems of the Joint Institute for Nuclear Research to irradiate tumours seated in the vicinity of…
The effect of ultrasonic action on the density of electronic states localized at the Si-glass interface is studied. A method is proposed for determining the surface and volume generation rates of charge carriers using…
The complex activation technology for fabrication of the high-strength aseismic concrete was developed with using nature water modified by SiO2 nanoparticles. Concrete strength on 20% increasing is provided due to…
A description of a remote laser lidar for monitoring terrestrial vegetation is given. Spectral curves of laser-induced leaf fluorescence in the vegetation section were measured on the example of cotton. Informative…
The light load current-voltage characteristics of solar photovoltaic module based on polycrystalline silicon have been studied at the temperature range of t=(19−40)°С under conditions of natural solar illumination…
This paper presents the results of calculations of the formation of Tamm states, depending on the amplitude of the perturbations of the boundary conditions. The calculation of additional bound states of electrons formed…
In the interactions of gold nuclei with the energy of 10.6 A GeV with heavy emulsion nuclei, the characteristics of double-charged projectile fragments were studied. The nonisotropy of the direction of motion of…
A phenomenological model of coronal bright points (CBP) as a result of the interaction of current systems in the solar corona (CTS) was proposed. The model is based on observational data related to the CBP, as well as…
The results of investigation of the developed new innovative product − oil pitch, used as the main binder in non-ferrous metallurgy are presented. The studies were carried out by modern physical[1]chemical methods…
The paper is devoted to investigation of magnetization on the surface of HTSC by the magnet optical method. It has been shown that in a week external magnetic field flow easily may enter inside the superconducting…
The effect of ionized impurities and microtubes on the reverse breakdown voltage of the p-n junction based on 4H-SiC obtained by low-temperature diffusion was studied. It is shown that using the equation for breakdown…
The research results of photosensitivity of Au-νGaAs:O-nCdS-nInP-Au heterojunction structure under various electrical circuit configuration are presented. It is experimentally shown that irrespective of the excited…
Under exposure to UV radiation in SiO2 nanoparticles compressed in the form of tablets, a broadband photoluminescence centered at around 460 nm has been observed. The luminescence intensity depends on the duration of…
Theoretical analysis and experimental study of the interaction of light waves in a fiber coupler revealed the optimal conditions for the manufacture of fiber couplers for optical communication systems. The dependence of…