Pub Date : 2022-01-01DOI: 10.17223/00213411/65/5/80
V. Zhbanova, S. Zienko
The article investigates the spectra of daytime, nighttime and cyrtopic vision of a person in the frequency domain. To understand the structure of the human organ of vision, mathematical analysis was used, where the visibility spectra of the eye are taken as a dynamic link. To obtain the impulse (time) characteristics of the link, the inverse Fourier transform was used. It was found that in terms of the value of the broadband index, these spectra in the frequency domain exhibit the properties of ultra-wideband signals. It was revealed that in the time domain the gain of the link is greater than one, the amplitude-frequency characteristic contains two sections, in one of which the gain of the link is more than one. In accordance with the Bouguer-Lambert law, these coefficients greater than one can be fulfilled when the absorption coefficient takes a negative value. Were learned the following results: the greatest value in terms of the width of the wavelength range and the gain has a cyrtopic vision and the smallest takes daytime vision; night vision, according to these parameters, occupies an intermediate position.
{"title":"Super bandal properties of the spectral sensitivity of the human eye","authors":"V. Zhbanova, S. Zienko","doi":"10.17223/00213411/65/5/80","DOIUrl":"https://doi.org/10.17223/00213411/65/5/80","url":null,"abstract":"The article investigates the spectra of daytime, nighttime and cyrtopic vision of a person in the frequency domain. To understand the structure of the human organ of vision, mathematical analysis was used, where the visibility spectra of the eye are taken as a dynamic link. To obtain the impulse (time) characteristics of the link, the inverse Fourier transform was used. It was found that in terms of the value of the broadband index, these spectra in the frequency domain exhibit the properties of ultra-wideband signals. It was revealed that in the time domain the gain of the link is greater than one, the amplitude-frequency characteristic contains two sections, in one of which the gain of the link is more than one. In accordance with the Bouguer-Lambert law, these coefficients greater than one can be fulfilled when the absorption coefficient takes a negative value. Were learned the following results: the greatest value in terms of the width of the wavelength range and the gain has a cyrtopic vision and the smallest takes daytime vision; night vision, according to these parameters, occupies an intermediate position.","PeriodicalId":14647,"journal":{"name":"Izvestiya vysshikh uchebnykh zavedenii. Fizika","volume":"60 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74901898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.17223/00213411/65/3/140
Yu. A. Khon
During the transition from the stage of linear to the stage of parabolic hardening, the formation of an irregular pattern is experimentally observed. The reasons and conditions for the formation of such a pattern are considered. A deformable medium is considered as a non-linear system with a continuously changing structure on two spatial and temporal scales. Kinetics of structural relaxation of a deformable medium. is described by a system of two nonlinear equations of parabolic type for dynamic order parameters. Based on the analysis of the solutions of the kinetic equations, it is shown that the solutions of the equations at the intermediate stage are static autosolitons.
{"title":"Formation of irregular pattern of localized plasticity at the stage of transition from linear to the stage of parabolic hardening","authors":"Yu. A. Khon","doi":"10.17223/00213411/65/3/140","DOIUrl":"https://doi.org/10.17223/00213411/65/3/140","url":null,"abstract":"During the transition from the stage of linear to the stage of parabolic hardening, the formation of an irregular pattern is experimentally observed. The reasons and conditions for the formation of such a pattern are considered. A deformable medium is considered as a non-linear system with a continuously changing structure on two spatial and temporal scales. Kinetics of structural relaxation of a deformable medium. is described by a system of two nonlinear equations of parabolic type for dynamic order parameters. Based on the analysis of the solutions of the kinetic equations, it is shown that the solutions of the equations at the intermediate stage are static autosolitons.","PeriodicalId":14647,"journal":{"name":"Izvestiya vysshikh uchebnykh zavedenii. Fizika","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74986059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.17223/00213411/65/9/101
L. Agamalieva, L. I. Amirova, R. G. Jafarov, M. Mutallimov
In the present work analytical preparations are being made based on the study of the asymptotic behaviour for the scattering amplitude of Higgs bosons in the ladder approximation for the purpose of further investigation of the Higgs boson decay into a pair of Z 0-boson in the large-momentum. To formulate the computational model in the ladder approximation, the Bethe-Salpeter equation with a minimal perturbative kernel is used. An asymptotic solution of the above equation is obtained at high energies.
{"title":"Toward solution of the model Bethe - Salpeter equation for Higgs bosons scattering amplitude","authors":"L. Agamalieva, L. I. Amirova, R. G. Jafarov, M. Mutallimov","doi":"10.17223/00213411/65/9/101","DOIUrl":"https://doi.org/10.17223/00213411/65/9/101","url":null,"abstract":"In the present work analytical preparations are being made based on the study of the asymptotic behaviour for the scattering amplitude of Higgs bosons in the ladder approximation for the purpose of further investigation of the Higgs boson decay into a pair of Z 0-boson in the large-momentum. To formulate the computational model in the ladder approximation, the Bethe-Salpeter equation with a minimal perturbative kernel is used. An asymptotic solution of the above equation is obtained at high energies.","PeriodicalId":14647,"journal":{"name":"Izvestiya vysshikh uchebnykh zavedenii. Fizika","volume":"71 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73124799","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.17223/00213411/65/1/31
V. V. Nasyrov, M. Nasyrova, E. Kramar
Proposes a method for calculating of bound states of a helium atom based on the searching for Jost function roots for the process of electron scattering by a singly ionized helium ion. A differential equation for the Jost functions is obtained.
{"title":"Application of the jost function to calculate the discrete spectrum of a helium atom","authors":"V. V. Nasyrov, M. Nasyrova, E. Kramar","doi":"10.17223/00213411/65/1/31","DOIUrl":"https://doi.org/10.17223/00213411/65/1/31","url":null,"abstract":"Proposes a method for calculating of bound states of a helium atom based on the searching for Jost function roots for the process of electron scattering by a singly ionized helium ion. A differential equation for the Jost functions is obtained.","PeriodicalId":14647,"journal":{"name":"Izvestiya vysshikh uchebnykh zavedenii. Fizika","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83028244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.17223/00213411/65/11/93
A. Markov, A. Solovyov
The effect of film material thermal conductivity on the melting threshold of the film-substrate system depending on the film thickness during a low-energy high-current electron beam (LEHCEB) irradiation was analyzed based on the numerical solution of the one-dimensional unsteady heat equation with a volumetric thermal source. Experimentally obtained oscillograms of the beam current at the collector and the accelerating voltage were used to simulate the heating source. Numerical variations of the film thermal conductivity were carried out within a wide range, overlapping the entire range for real materials. The dependence of the melting threshold of a homogeneous material on thermal conductivity was determined. The general regularities of the behavior of film and substrate melting thresholds depending on the film thickness were also established.
{"title":"On melting thresholds of the film-substrate system under irradiation with a low-energy high-current electron beam","authors":"A. Markov, A. Solovyov","doi":"10.17223/00213411/65/11/93","DOIUrl":"https://doi.org/10.17223/00213411/65/11/93","url":null,"abstract":"The effect of film material thermal conductivity on the melting threshold of the film-substrate system depending on the film thickness during a low-energy high-current electron beam (LEHCEB) irradiation was analyzed based on the numerical solution of the one-dimensional unsteady heat equation with a volumetric thermal source. Experimentally obtained oscillograms of the beam current at the collector and the accelerating voltage were used to simulate the heating source. Numerical variations of the film thermal conductivity were carried out within a wide range, overlapping the entire range for real materials. The dependence of the melting threshold of a homogeneous material on thermal conductivity was determined. The general regularities of the behavior of film and substrate melting thresholds depending on the film thickness were also established.","PeriodicalId":14647,"journal":{"name":"Izvestiya vysshikh uchebnykh zavedenii. Fizika","volume":"53 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89818425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.17223/00213411/65/5/36
N. Mnikh, M. V. Nadezhkin, L. Zuev
The model is considered to explain the development of plastic flow based on the presentation on interaction of plastic flow carriers with acoustic emission pulses originated during elementary plasticity acts. It is shown that a distribution of localization zones in the specimen volume is localized in character, has the form of different autowave processes and related to the acting work hardening law.
{"title":"Complex analysis of mechanical and acoustical properties of the materials","authors":"N. Mnikh, M. V. Nadezhkin, L. Zuev","doi":"10.17223/00213411/65/5/36","DOIUrl":"https://doi.org/10.17223/00213411/65/5/36","url":null,"abstract":"The model is considered to explain the development of plastic flow based on the presentation on interaction of plastic flow carriers with acoustic emission pulses originated during elementary plasticity acts. It is shown that a distribution of localization zones in the specimen volume is localized in character, has the form of different autowave processes and related to the acting work hardening law.","PeriodicalId":14647,"journal":{"name":"Izvestiya vysshikh uchebnykh zavedenii. Fizika","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88060509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.17223/00213411/65/3/32
V. Aksenov
The properties of the Lorentz force in the natural electromagnetic field of the Earth are considered. Theorems of the existence of toroidal non-forceful magnetic fields modulating the Lorentz force are formulated and proved. The sources of these fields are indicated, the initial equations of geophysical electrodynamics are written taking into account force and non-force electromagnetic fields on Earth.
{"title":"On the properties of the Lorentz force in the natural magnetic field of the Earth","authors":"V. Aksenov","doi":"10.17223/00213411/65/3/32","DOIUrl":"https://doi.org/10.17223/00213411/65/3/32","url":null,"abstract":"The properties of the Lorentz force in the natural electromagnetic field of the Earth are considered. Theorems of the existence of toroidal non-forceful magnetic fields modulating the Lorentz force are formulated and proved. The sources of these fields are indicated, the initial equations of geophysical electrodynamics are written taking into account force and non-force electromagnetic fields on Earth.","PeriodicalId":14647,"journal":{"name":"Izvestiya vysshikh uchebnykh zavedenii. Fizika","volume":"52 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88968488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.17223/00213411/65/5/15
A. Knyazeva, N. Bukrina
In the work, the method of assessing stresses and deformations in the process of the synthesis of the intermetallide in the thermal explosion mode of the Ni-Al powder mixture in the cylindrical reactor is proposed. The task is reduced to the problem described in the literature about the stress-strain state of the coating cylinder. To estimate stresses in the sample, the first approximation uses well-known problems of thermoplasticity, including those having analytical solutions. Each calculation provides complete information on the distribution of the concentrations of the elements of compounds and phases, as well as the formation of stresses and deformations in various layers of the sample.
{"title":"The formation of thermal stresses in thermal explosion synthesis products taking into account changes in phase composition for Ni-Al mixture","authors":"A. Knyazeva, N. Bukrina","doi":"10.17223/00213411/65/5/15","DOIUrl":"https://doi.org/10.17223/00213411/65/5/15","url":null,"abstract":"In the work, the method of assessing stresses and deformations in the process of the synthesis of the intermetallide in the thermal explosion mode of the Ni-Al powder mixture in the cylindrical reactor is proposed. The task is reduced to the problem described in the literature about the stress-strain state of the coating cylinder. To estimate stresses in the sample, the first approximation uses well-known problems of thermoplasticity, including those having analytical solutions. Each calculation provides complete information on the distribution of the concentrations of the elements of compounds and phases, as well as the formation of stresses and deformations in various layers of the sample.","PeriodicalId":14647,"journal":{"name":"Izvestiya vysshikh uchebnykh zavedenii. Fizika","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77662095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.17223/00213411/65/11/11
D. Beloplotov, A. Bugaev, V. Gushenets, A. Nikolaev, A. Nikonenko, K. Savkin, D. A. Sorokin, A. A. Cherkasov, M. Shandrikov
The paper presents the results of a study of the current-voltage characteristics and optical emission spectra of plasma of a atmospheric pressure pulsed discharge plasma at a frequency of several tens of kilohertz and a pulse duration of up to 10 μs, in the mode of generation of plasma flows containing metal particles. The features of the plasma generator conclude in combination of the design of electrodes, as well as the modes of electric and gas supply of the discharge system. The cathode is a crucible containing a melting insert which allows the discharge operation in a low-current form with a current of 40 mA to 1 A, at a sufficiently high voltage of 150 to 200 V, without transition to arc discharge mode. Such parameters make it possible to generate atomic flows of a melting cathode insert, which are blown out by a jet of working argon gas, pumped at a flow rate of 1 l/min, outside the discharge system. The entry of a metal component into a gas-discharge plasma affects the parameters of the discharge operation, as well as the properties of its optical emission. In the context of this phenomenon, the spectral distributions of the intensity of optical radiation corresponding to the lines of magnesium, indium, and zinc were investigated, as well as their time dependence during the current pulse period operation, in relation to the identification of physical features leading to stable generation of flows of metal atoms at atmospheric pressure.
{"title":"Low-current discharge in a flow of argon at atmospheric pressure under the formation of metal atoms: electric and optical characteristics","authors":"D. Beloplotov, A. Bugaev, V. Gushenets, A. Nikolaev, A. Nikonenko, K. Savkin, D. A. Sorokin, A. A. Cherkasov, M. Shandrikov","doi":"10.17223/00213411/65/11/11","DOIUrl":"https://doi.org/10.17223/00213411/65/11/11","url":null,"abstract":"The paper presents the results of a study of the current-voltage characteristics and optical emission spectra of plasma of a atmospheric pressure pulsed discharge plasma at a frequency of several tens of kilohertz and a pulse duration of up to 10 μs, in the mode of generation of plasma flows containing metal particles. The features of the plasma generator conclude in combination of the design of electrodes, as well as the modes of electric and gas supply of the discharge system. The cathode is a crucible containing a melting insert which allows the discharge operation in a low-current form with a current of 40 mA to 1 A, at a sufficiently high voltage of 150 to 200 V, without transition to arc discharge mode. Such parameters make it possible to generate atomic flows of a melting cathode insert, which are blown out by a jet of working argon gas, pumped at a flow rate of 1 l/min, outside the discharge system. The entry of a metal component into a gas-discharge plasma affects the parameters of the discharge operation, as well as the properties of its optical emission. In the context of this phenomenon, the spectral distributions of the intensity of optical radiation corresponding to the lines of magnesium, indium, and zinc were investigated, as well as their time dependence during the current pulse period operation, in relation to the identification of physical features leading to stable generation of flows of metal atoms at atmospheric pressure.","PeriodicalId":14647,"journal":{"name":"Izvestiya vysshikh uchebnykh zavedenii. Fizika","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79575624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.17223/00213411/65/7/143
A. N. Tyumentsev, I. I. Sukhanov, I. Ditenberg, V. Chernov
{"title":"Theoretical analysis of thermal stability of nanoscale particles of nonmetallic phases in low-activation vanadium alloys with disperse strengthening","authors":"A. N. Tyumentsev, I. I. Sukhanov, I. Ditenberg, V. Chernov","doi":"10.17223/00213411/65/7/143","DOIUrl":"https://doi.org/10.17223/00213411/65/7/143","url":null,"abstract":"","PeriodicalId":14647,"journal":{"name":"Izvestiya vysshikh uchebnykh zavedenii. Fizika","volume":"67 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83936237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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