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Generation of the Second Optical Harmonic under the Action of Narrowband Terahertz Pulses in the Antiferromagnet NiO 反铁磁体氧化镍在窄带太赫兹脉冲作用下产生二次光学谐波
IF 1 4区 物理与天体物理
High Temperature Pub Date : 2024-03-22 DOI: 10.1134/s0018151x23060147
O. V. Chefonov, A. V. Ovchinnikov, M. B. Agranat
{"title":"Generation of the Second Optical Harmonic under the Action of Narrowband Terahertz Pulses in the Antiferromagnet NiO","authors":"O. V. Chefonov, A. V. Ovchinnikov, M. B. Agranat","doi":"10.1134/s0018151x23060147","DOIUrl":"https://doi.org/10.1134/s0018151x23060147","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The study examines aspects of the generation of the second optical harmonic in the centrosymmetric antiferromagnet NiO when exposed to narrowband terahertz pulses with an electric field strength on the order of 1 MV/cm. It was found that when exposed to terahertz pulses with a frequency of 1 THz, which corresponds to the antiferromagnetic resonance frequency of NiO, a significant decrease in the intensity of the second harmonic is observed versus exposure to pulses with a frequency of 1.5 THz. It is shown that the observed decrease in the intensity of second harmonic generation can be explained by multipath interference during the propagation of a narrowband terahertz pulse in a thin sample.</p>","PeriodicalId":13163,"journal":{"name":"High Temperature","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140196237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Excitation of Stationary Cross-Flow Instability Modes Using a Plasma Actuator Based on Dielectric Barrier Discharge 利用基于介质阻挡放电的等离子体致动器激发静态横流不稳定模式
IF 1 4区 物理与天体物理
High Temperature Pub Date : 2024-03-22 DOI: 10.1134/s0018151x23060020
A. Ya. Kotvitsky, I. A. Moralev, M. V. Ustinov, A. A. Abdullaev
{"title":"Excitation of Stationary Cross-Flow Instability Modes Using a Plasma Actuator Based on Dielectric Barrier Discharge","authors":"A. Ya. Kotvitsky, I. A. Moralev, M. V. Ustinov, A. A. Abdullaev","doi":"10.1134/s0018151x23060020","DOIUrl":"https://doi.org/10.1134/s0018151x23060020","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The article presents the results of studying the stationary mode of cross-flow instability excited by a plasma actuator based on dielectric barrier discharge in a three-dimensional boundary layer on a swept plate with an induced pressure gradient. It is shown that the actuator generates an instability mode of a given wavelength with an initial amplitude of up to 2% of the free-stream velocity, while the signal-to-noise ratio is no greater than 15%. As a result of a parametric study, a family of growth curves of the excited instability mode was obtained as a function of the parameters of the voltage supplying the discharge. It is shown that the initial amplitude of stationary cross-flow vortices generated by the actuator in the studied range of parameters depends quadratically on the overvoltage at the electrodes and linearly on frequency, which coincides with a similar dependence for the actuator thrust.</p>","PeriodicalId":13163,"journal":{"name":"High Temperature","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140205299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Direct Measurement of Zirconium Melting Line up to 4 kbar by Isobaric Pulse Heating Method 等压脉冲加热法直接测量 4 千巴以下的锆熔融线
IF 1 4区 物理与天体物理
High Temperature Pub Date : 2024-03-22 DOI: 10.1134/s0018151x23060123
A. V. Dorovatovsky, M. A. Sheindlin, D. V. Minakov
{"title":"Direct Measurement of Zirconium Melting Line up to 4 kbar by Isobaric Pulse Heating Method","authors":"A. V. Dorovatovsky, M. A. Sheindlin, D. V. Minakov","doi":"10.1134/s0018151x23060123","DOIUrl":"https://doi.org/10.1134/s0018151x23060123","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The melting temperature of zirconium was measured at different pressures in the range from 1 to 4000 bar by pulsed current heating. The obtained pressure dependence of the melting temperature gives an estimate of the slope of the zirconium melting line of 62 K/GPa, which agrees well with the results of ab initio calculations.</p>","PeriodicalId":13163,"journal":{"name":"High Temperature","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140196214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Problem of Injection of Dry Steam into a Reservoir without Condensation in the Well 将干蒸汽注入储层而不在井中凝结的问题
IF 1 4区 物理与天体物理
High Temperature Pub Date : 2024-03-22 DOI: 10.1134/s0018151x2306010x
M. G. Alishaev, A. A. Aliverdiev, V. D. Beibalaev
{"title":"Problem of Injection of Dry Steam into a Reservoir without Condensation in the Well","authors":"M. G. Alishaev, A. A. Aliverdiev, V. D. Beibalaev","doi":"10.1134/s0018151x2306010x","DOIUrl":"https://doi.org/10.1134/s0018151x2306010x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Temperature losses along a well string are investigated for the case of dry steam injection in order to determine the possibility of its delivery to the well bottom without condensation. It is assumed that in the rock, the temperature increases with increasing depth according to the geothermal gradient, the steam flow is constant, the steam at the head has a high temperature and is dry, containing no water droplets. On the way to the bottom, the steam temperature decreases, but does not yet reach the saturation point. Heat loss into rock is calculated using the generally accepted formula. The position of the point where steam condensation begins in the well is determined. Calculations are carried out for the most probable flow rates in the fields: 25, 50, 75, and 100 t/day. The heat capacity of dry steam is considered constant, which is acceptable only for low pressures, up to 3–4 MPa. In this case, a formula is proposed for the steam temperature distribution throughout the well string and the problem is solved analytically. However, at elevated pressures, it is necessary to take into account the thermal dependence of the heat capacity of steam and use a numerical method to find the temperature distribution. Based on the calculated variants, a conclusion is made about the possibility of supplying the amount of phase transition heat to the reservoir in full. If the reservoir is highly permeable and lies close to the surface, then we can hope for complete delivery of the phase transition heat to the reservoir. At formation depths greater than 500 m, steam is completely condensed in the well string. The heat of the phase transition enters the rock.</p>","PeriodicalId":13163,"journal":{"name":"High Temperature","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140196405","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Shock-Wave Transformations of Fine-Grained Quartz Dispersed in a Silver Matrix 分散在银基质中的细粒石英的冲击波转变
IF 1 4区 物理与天体物理
High Temperature Pub Date : 2024-03-22 DOI: 10.1134/s0018151x23060068
A. N. Zhukov, V. V. Yakushev, A. I. Rogacheva
{"title":"Shock-Wave Transformations of Fine-Grained Quartz Dispersed in a Silver Matrix","authors":"A. N. Zhukov, V. V. Yakushev, A. I. Rogacheva","doi":"10.1134/s0018151x23060068","DOIUrl":"https://doi.org/10.1134/s0018151x23060068","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Samples with porosities of 2–3 and 13% consisting of fine-grained quartz dispersed in a silver matrix were subjected to shock compression up to 28, 33, and 37 GPa in planar recovery ampoules. In samples with a porosity of 2–3%, after purification from silver, along with amorphized quartz, a crystalline high pressure silicon dioxide phase was detected by powder X-ray diffraction, which differs from stishovite and presumably has a monoclinic lattice.</p>","PeriodicalId":13163,"journal":{"name":"High Temperature","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140203375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mass Spectrometric Thermodynamic Study of the Fe2O3–TiO2 System Fe2O3-TiO2 系统的质谱热力学研究
IF 1 4区 物理与天体物理
High Temperature Pub Date : 2024-03-22 DOI: 10.1134/s0018151x23060111
V. L. Stolyarova, S. I. Lopatin, V. A. Vorozhtcov, A. V. Fedorova, A. A. Selyutin, A. L. Shilov
{"title":"Mass Spectrometric Thermodynamic Study of the Fe2O3–TiO2 System","authors":"V. L. Stolyarova, S. I. Lopatin, V. A. Vorozhtcov, A. V. Fedorova, A. A. Selyutin, A. L. Shilov","doi":"10.1134/s0018151x23060111","DOIUrl":"https://doi.org/10.1134/s0018151x23060111","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>High-temperature differential mass spectrometry was used to study the vaporization processes and thermodynamic properties of samples of the Fe<sub>2</sub>O<sub>3</sub>–TiO<sub>2</sub> system containing 25, 35, and 45 mol. % iron oxide. As shown earlier, at temperatures above 1400 K, Fe<sub>2</sub>O<sub>3</sub>, losing oxygen, turns into FeO. Therefore, in this article, a mass spectrometric thermodynamic study of the FeO–TiO<sub>2</sub> system was carried out at a temperature of 1760 K. The composition and partial pressures of vapor, as well as the values of FeO activities and excess Gibbs energy in the FeO–TiO<sub>2</sub> system were determined. Using the Wilson polynomial made it possible for the first time to estimate the mixing enthalpy and excess entropy in the FeO–TiO<sub>2</sub> system at 1760 K. The thermodynamic properties of melts of the FeO–TiO<sub>2</sub> system at 1760 K were modeled using the generalized lattice theory of associated solutions, and the relative numbers of bonds of various types in the model melt lattice were calculated, indicating the preferential formation of Fe–O–Ti bonds at a FeO content of 55 mol %. It is shown that at a temperature of 1760 K, the found values of the excess Gibbs energy in the FeO–TiO<sub>2</sub> system are evidence of negative deviations from the ideality.</p>","PeriodicalId":13163,"journal":{"name":"High Temperature","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140196396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Self-Organization of Clusters of Active Brownian Particles in a Colloidal Plasma under the Action of Laser Radiation 在激光辐射作用下胶体等离子体中活性布朗粒子群的自组织
IF 1 4区 物理与天体物理
High Temperature Pub Date : 2024-03-22 DOI: 10.1134/s0018151x23060135
M. M. Vasiliev, A. A. Alekseevskaya, K. G. Koss, E. V. Vasilieva, O. F. Petrov
{"title":"Self-Organization of Clusters of Active Brownian Particles in a Colloidal Plasma under the Action of Laser Radiation","authors":"M. M. Vasiliev, A. A. Alekseevskaya, K. G. Koss, E. V. Vasilieva, O. F. Petrov","doi":"10.1134/s0018151x23060135","DOIUrl":"https://doi.org/10.1134/s0018151x23060135","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Clusters of active Brownian particles in gas-discharge plasma are considered as open systems with energy exchange with the environment. The evolution of a cluster of 19 active Brownian particles with a partially absorbing metal surface (so-called Janus particles) when exposed to intense laser radiation is shown. The formation of strongly correlated clusters of charged particles with increasing laser radiation power was observed experimentally. Based on an analysis of the trajectories of particles, the region of their localization, and changes in their kinetic energy, fractal dimension, and dynamic entropy for different values of laser radiation power density, the self-organization of a cluster of strongly interacting particles in the plasma of a high-frequency glow discharge is studied.</p>","PeriodicalId":13163,"journal":{"name":"High Temperature","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140203352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
High-Temperature Deformation of a Granulated Nickel Alloy 粒状镍合金的高温变形
IF 1 4区 物理与天体物理
High Temperature Pub Date : 2024-03-22 DOI: 10.1134/s0018151x2306007x
D. R. Abashev, V. S. Bondar, P. O. Dikovitskyi, S. V. Morozov, O. E. Larionova
{"title":"High-Temperature Deformation of a Granulated Nickel Alloy","authors":"D. R. Abashev, V. S. Bondar, P. O. Dikovitskyi, S. V. Morozov, O. E. Larionova","doi":"10.1134/s0018151x2306007x","DOIUrl":"https://doi.org/10.1134/s0018151x2306007x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>A variant of thermoviscoplasticity theory is proposed, by mathematical modeling of the viscoplastic behavior of a granulated nickel alloy under high-temperature conditions and based on flow theory with combined hardening. The variant of thermoviscoplasticity theory is generalized to nonisothermal loading and the dependence of the loading process on the strain rate. The results of experiments on uniaxial tension for cylindrical samples of a granulated nickel alloy at high temperatures and various strain rates are presented. The calculated viscoplastic strain diagrams are compared with experimental ones. Satisfactory agreement between the calculated and experimental results is observed, which indicates the adequacy of this variant thermoviscoplasticity theory and the method for identifying the material parameters.</p>","PeriodicalId":13163,"journal":{"name":"High Temperature","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140203240","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Deposition of a Polydisperse Aerosol in a Narrow Closed Tube in Resonance Oscillation Mode 共振振荡模式下多分散气溶胶在窄封闭管中的沉积
IF 1 4区 物理与天体物理
High Temperature Pub Date : 2024-03-22 DOI: 10.1134/s0018151x23060081
D. A. Gubaidullin, R. G. Zaripov, L. A. Tkachenko, L. R. Shaidullin, S. A. Fadeev
{"title":"Deposition of a Polydisperse Aerosol in a Narrow Closed Tube in Resonance Oscillation Mode","authors":"D. A. Gubaidullin, R. G. Zaripov, L. A. Tkachenko, L. R. Shaidullin, S. A. Fadeev","doi":"10.1134/s0018151x23060081","DOIUrl":"https://doi.org/10.1134/s0018151x23060081","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Nonlinear oscillations of a gas and deposition of tobacco smoke at resonance in a narrow closed tube were experimentally studied. The resulting oscillograms show asymmetry of the leading and trailing edges of the pressure wave. With an increase in piston oscillation amplitude, an increase in the sound pressure level of the gas was revealed to 163 dB at a maximum studied excitation amplitude of 0.3 mm. The deposition of tobacco smoke particles in resonance oscillation mode with an excitation amplitude of 0.3 mm occurs 24 times faster compared to natural deposition.</p>","PeriodicalId":13163,"journal":{"name":"High Temperature","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140205331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Asymmetric Complex Plasma Pressure and Isothermal Compressibility with Regard to Nonlinear Screening in the Average Wigner–Seitz Cell Model 关于平均维格纳-塞茨电池模型中非线性筛选的不对称复合等离子体压力和等温压缩性
IF 1 4区 物理与天体物理
High Temperature Pub Date : 2024-03-22 DOI: 10.1134/s0018151x23060032
I. A. Martynova, I. L. Iosilevskiy
{"title":"Asymmetric Complex Plasma Pressure and Isothermal Compressibility with Regard to Nonlinear Screening in the Average Wigner–Seitz Cell Model","authors":"I. A. Martynova, I. L. Iosilevskiy","doi":"10.1134/s0018151x23060032","DOIUrl":"https://doi.org/10.1134/s0018151x23060032","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The study considers a two-component electroneutral equilibrium complex plasma of finite-sized macroions with charges <i>Z</i> (<i>Z</i> <span>( gg )</span> 1) and point oppositely charged microions with unit charges. System pressure was calculated in the Poisson–Boltzmann approximation with regard to nonlinear screening of macroions by microions in the average Wigner–Seitz cell model. One of the calculation methods obtains pressure by calculating the nonideal part of the Helmholtz free energy; the second is specific to the Wigner–Seitz average cell model. It is shown that the pressure and isothermal compressibility of the plasma are positive over the entire range of macroion concentrations.</p>","PeriodicalId":13163,"journal":{"name":"High Temperature","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140196385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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