Influence of models of the atomic nuclei on the estimated cross sections of photoneutron reactions on $^{116}$Sn
Influence of models of the atomic nuclei on the estimated cross sections of photoneutron reactions on $^{116}$Sn
A. A. Kuznetsov$^1$, V. V. Varlamov$^1$, B. S. Ishkhanov$^{1,2}$, V. N. Orlin$^1$, A. A. Prosnyakov$^2$
In this work were obtained estimated cross sections of photoneutron reactions on $^{116}$Sn based on the theoretical-experimental approach. Calculations of the used multiplicity transition fuctions were based on the calculations of combined model of photonucleon reactions and the TALYS program. The Influence of the parameters of selected models on the estimated cross sections of the reactions was evaluated.
Show AbstractEnergy dependence of differential cross sections for particle production at the LHC
Energy dependence of differential cross sections for particle production at the LHC
I. I. Ovcharov$^2$, L. N. Smirnova$^{1,2}$
Analysis of differential spectra of charged particles produced in proton collisions at the center of mass energies √s = 0.9, 2.36, 7, 8 и 13 TeV in dependence on transverse momentum at the LHC is presented. The parameterization of both transverse momentum spectra and their ratios are fulfilled. It is shown that particle spectrum on transverse momentum becomes harder with increase of proton collision energy.
Show AbstractFeatures of the formation and decay of transuranium nuclei formed in reactions with heavy ions
Features of the formation and decay of transuranium nuclei formed in reactions with heavy ions
D. O. Eremenko$^{1,2}$, D. I. Denisova$^1$, V. A. Drozdov$^2$, S. Yu. Platonov$^{1,2}$, O. V. Fotina$^{2,3}$, O. A. Yuminov$^2$
The features of the processes of formation and decay of transuranium nuclei formed in the reactions of complete fusion of heavy ions are analyzed. When analyzing the experimental data for the $^{16}$O+$^{232}$Th, we used quantum-mechanical calculations of the initial distributions for the components of the total angular momentum of the compound nuclei $^{248,247}$Cf and the dynamic ssion model to describe their decay. It is shown that the
eects of <
To the question of analysis equations for moving due to the rotating of the plane brahistohron.
To the question of analysis equations for moving due to the rotating of the plane brahistohron.
S. O. Gladkov, S. B. Bogdanova
An analytical conclusion of the dynamic equation for the ball moving on the rotating with the angle frequency two dimensional gutter arbitrary form is given. The both forces of the dry and viscosity friction was accounted. Due to solvation of equations system move analytically and numerical was founded of the class trajectories at neglect frictions forces.
Show AbstractThe preferential reference system in cosmology and the possible modification of Lorentz transformation
The preferential reference system in cosmology and the possible modification of Lorentz transformation
Karol Szostek, Roman Szostek
The article is being considered preferential in cosmology reference system and the possible modification of the Lorentz transformation. It is commonly thought that the Michelson-Morley experiment from 1887 and Kennedy-Thorndike experiment from 1932 demonstrated that the preferential reference system does not exist and that the velocity of light in vacuum is absolutely constant. The analysis of this experiment led to the creation of the special theory of relativity (STR). In this article we demonstrated that the explanation of the results of the Michelson-Morley experiment and other experiments with light is possible, provided that the fact that the velocity of light is not constant for every observer is acceptable. The article explains why Michelson-Morley and Kennedy-Thorndike experiments could not detect the preferential reference system. In article, a different transformation of time and position than the Lorentz transformation is derived on the basis of the geometric analysis of the Michelson-Morley experiment. The transformation is derived based on the assumption that the preferential reference system of reference exists. In inertial frames of reference moving in the ether, the velocity of light may be different. The obtained transformations are transformations from the preferential reference system to the inertial frame and from the inertial frame to the preferential reference system. Based on the new transformation, the Special Theory of Ether (STE) was created.
Show AbstractGeneralized dynamical equations of plane curvilinear motion of a material body on a trench with account of a friction forces (their numerical analysis in some special cases)
Generalized dynamical equations of plane curvilinear motion of a material body on a trench with account of a friction forces (their numerical analysis in some special cases)
S.O. Gladkov, S.B. Bogdanova
In this paper we have derived the general dynamic equations of a plane curvilinear motion, taking into account the forces as a viscous as and dry friction. It’s founded a closed system of four nonlinear differential equations. Its analyzes of the solution in some special cases illustrated by the graphical in the view of different trajectories which charactering of the plane motion.
Show AbstractConstruction of a method for statistical definition of the slips level of total electron content by using GPS observations.
Construction of a method for statistical definition of the slips level of total electron content by using GPS observations.
V. I. Zakharov$^{1,2}$, Yu. V. Yasyukevich$^2$, V. E. Pronin$^1$
The paper proposes a method for determining the level above which can be considered a slips in determining the time rate of total electron content (TEC). The method is based on a statistical estimation of the properties of the distribution for the studied parameter. The aim of the method is the experimental determination of the threshold values of TEC jumps, associated with the "tails" of the studied distributions for a given physically adequate level of significance defined by latitudinal properties of geo- and heliophysical conditions. It was found that the threshold value (from which the measured values can be considered as statistical noise) depends on the latitude of the observation region. The maximum of threshold is for the Arctic region, minimum - to the middle lattitude band stations. The method application performed for different sets of 400 IGS network stations located in the high (200 plants), middle (over 100) and equatorial latitudes (over 100 stations) respectively. The test methodics is conducted for the 2010 and 2014 in a variety of geo- and heliophysical conditions and phases of the solar cycle 24. As the level of significance we selected range "two dispersions".
Show AbstractMethod to determine maximal values of acousto–optic figure of merit in optically isotropic media
Method to determine maximal values of acousto–optic figure of merit in optically isotropic media
P.A. Nikitin
A method to determine optimal values of acousto-optic (АО) figure of merit was developed. Its advantages are clarity and high performance. Results can be used for development high-efficient AO devices based on optically isotropic media.
Show AbstractQuasi–orthogonal and quasi–collinear acoucto–optic interaction in absorbing medium
Quasi–orthogonal and quasi–collinear acoucto–optic interaction in absorbing medium
P.A. Nikitin, V.B. Voloshinov
A theory of acousto–optic interaction (AOI) in anisotropic medium, taking into account absorption of electromagnetic waves and attenuation of acoustic waves, has been developed. Expressions for optimal length and bandwidth of the AOI were derived. A non–reciprocal effect inherent only in the backward collinear diffraction was discovered.
Show AbstractMathematical model of rectangular waveguide system with impedance wall
Mathematical model of rectangular waveguide system with impedance wall
A. I. Erokhin, I.E. Mogilevsky, V.E. Rodyakin, V.M. Pikunov
Mathematical model for rectangular waveguide with impedance wall on which impedance Schukin–Leontovich boundary conditions are implemented is considered. Using these boundary conditions complete electromagnetic field in the waveguide is not divided into TE and TM fields and hybrids modes have to be taken into account. A new basis to represent components of complete electromagnetic field of a rectangular waveguide is suggested using witch impedance boundary conditions are satisfied exactly. Stiff system ODEs for amplitudes of this representation is a result.
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