Pub Date : 2024-03-22DOI: 10.1134/s0018151x23060147
O. V. Chefonov, A. V. Ovchinnikov, M. B. Agranat
Abstract
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.
{"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}
Pub Date : 2024-03-22DOI: 10.1134/s0018151x23060020
A. Ya. Kotvitsky, I. A. Moralev, M. V. Ustinov, A. A. Abdullaev
Abstract
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.
{"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}
Pub Date : 2024-03-22DOI: 10.1134/s0018151x23060123
A. V. Dorovatovsky, M. A. Sheindlin, D. V. Minakov
Abstract
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.
摘要 通过脉冲电流加热，在 1 至 4000 巴的不同压力下测量了锆的熔化温度。根据所获得的熔化温度的压力依赖性，可以估算出锆熔化线的斜率为 62 K/GPa，这与 ab initio 计算的结果非常吻合。
{"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}
Pub Date : 2024-03-22DOI: 10.1134/s0018151x2306010x
M. G. Alishaev, A. A. Aliverdiev, V. D. Beibalaev
Abstract
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.
{"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}
Pub Date : 2024-03-22DOI: 10.1134/s0018151x23060068
A. N. Zhukov, V. V. Yakushev, A. I. Rogacheva
Abstract
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.
{"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}
Pub Date : 2024-03-22DOI: 10.1134/s0018151x23060111
V. L. Stolyarova, S. I. Lopatin, V. A. Vorozhtcov, A. V. Fedorova, A. A. Selyutin, A. L. Shilov
Abstract
High-temperature differential mass spectrometry was used to study the vaporization processes and thermodynamic properties of samples of the Fe2O3–TiO2 system containing 25, 35, and 45 mol. % iron oxide. As shown earlier, at temperatures above 1400 K, Fe2O3, losing oxygen, turns into FeO. Therefore, in this article, a mass spectrometric thermodynamic study of the FeO–TiO2 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–TiO2 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–TiO2 system at 1760 K. The thermodynamic properties of melts of the FeO–TiO2 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–TiO2 system are evidence of negative deviations from the ideality.
摘要 采用高温差分质谱法研究了含 25、35 和 45 摩尔氧化铁的 Fe2O3-TiO2 体系样品的气化过程和热力学性质。如前所述，在温度高于 1400 K 时，Fe2O3 在失去氧气后会变成 FeO。因此，本文对温度为 1760 K 的 FeO-TiO2 体系进行了质谱热力学研究，确定了 FeO-TiO2 体系中的蒸汽成分和分压、FeO 活性值和过剩吉布斯能。利用相关溶液的广义晶格理论对 1760 K 时 FeO-TiO2 体系熔体的热力学性质进行了建模，并计算了模型熔体晶格中各类键的相对数量，表明在 FeO 含量为 55 mol % 时，Fe-O-Ti 键优先形成。结果表明，在 1760 K 的温度下，FeO-TiO2 体系中已发现的过剩吉布斯能值证明与理想状态存在负偏差。
{"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}
Pub Date : 2024-03-22DOI: 10.1134/s0018151x23060135
M. M. Vasiliev, A. A. Alekseevskaya, K. G. Koss, E. V. Vasilieva, O. F. Petrov
Abstract
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.
{"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}
Pub Date : 2024-03-22DOI: 10.1134/s0018151x2306007x
D. R. Abashev, V. S. Bondar, P. O. Dikovitskyi, S. V. Morozov, O. E. Larionova
Abstract
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.
{"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}
Pub Date : 2024-03-22DOI: 10.1134/s0018151x23060081
D. A. Gubaidullin, R. G. Zaripov, L. A. Tkachenko, L. R. Shaidullin, S. A. Fadeev
Abstract
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.
{"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}
Pub Date : 2024-03-22DOI: 10.1134/s0018151x23060032
I. A. Martynova, I. L. Iosilevskiy
Abstract
The study considers a two-component electroneutral equilibrium complex plasma of finite-sized macroions with charges Z (Z( gg ) 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.
{"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}
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