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Quasilinear Simulation of the Development of Weibel Turbulence in Anisotropic Collisionless Plasma 各向异性无碰撞等离子体中魏伯尔湍流发展的准线性模拟
IF 1 4区 物理与天体物理
Journal of Experimental and Theoretical Physics Pub Date : 2024-01-26 DOI: 10.1134/S1063776123120099
A. A. Kuznetsov, A. A. Nechaev, M. A. Garasev, Vl. V. Kocharovsky
{"title":"Quasilinear Simulation of the Development of Weibel Turbulence in Anisotropic Collisionless Plasma","authors":"A. A. Kuznetsov,&nbsp;A. A. Nechaev,&nbsp;M. A. Garasev,&nbsp;Vl. V. Kocharovsky","doi":"10.1134/S1063776123120099","DOIUrl":"10.1134/S1063776123120099","url":null,"abstract":"<p>A spectral quasilinear approach to the problem of TEM-Weibel instability in an anisotropic collisionless plasma is developed, which takes into account only the integral nonlinear interaction of modes through the joint variation of the spatially averaged particle velocity distribution induced by these modes. Within this approximation, a closed system of equations is obtained for the one- and two-dimensional evolution of spatial modes (harmonics) of the distribution function of particles and the electromagnetic field under conditions when the plasma anisotropy axis, the wave vector, and the magnetic field of the modes are orthogonal to each other. The numerical solution of this system of equations is compared with the available results of one-dimensional analytical quasilinear theory in the region of its applicability, as well as with the results of two-dimensional simulation by the particle-in-cell method, which also takes into account the direct four-wave interaction of modes. It is established that in the simplest cases of one-dimensional and axially symmetric two-dimensional problems for a bi-Maxwellian plasma, quasilinear phenomena play the leading role at a quite long stage of nonlinear development of turbulence. It is noted that at a later stage of decay of turbulence and in a more general formulation of the problem, in particular, in the presence of an external magnetic field, the direct nonlinear interaction of modes can manifest itself along with quasilinear phenomena. Based on the analysis carried out, the contribution of certain nonlinear effects to the evolution of the spatial spectrum of Weibel turbulence is revealed, and the properties of this turbulence are studied, including the self-similar character and qualitatively different stages of the dynamics of unstable modes.</p>","PeriodicalId":629,"journal":{"name":"Journal of Experimental and Theoretical Physics","volume":"137 6","pages":"966 - 985"},"PeriodicalIF":1.0,"publicationDate":"2024-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139579482","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
Ghost Fiber Optic Endoscopy with Several Single-Pixel Detectors in the Object Arm 在物体臂上安装多个单像素探测器的幽灵光纤内窥镜
IF 1 4区 物理与天体物理
Journal of Experimental and Theoretical Physics Pub Date : 2024-01-26 DOI: 10.1134/S1063776123120038
D. A. Balakin, A. V. Belinsky
{"title":"Ghost Fiber Optic Endoscopy with Several Single-Pixel Detectors in the Object Arm","authors":"D. A. Balakin,&nbsp;A. V. Belinsky","doi":"10.1134/S1063776123120038","DOIUrl":"10.1134/S1063776123120038","url":null,"abstract":"<p>We describe a new method for the formation of optical ghost images, in which radiation in the object arm is detected by several detectors. The advantage of the proposed method is demonstrated, which is the smaller number of illumination patterns required for reconstructing the object image as compared to traditional schemes of ghost imaging. We propose variants of algorithms for measurement reduction to the form relevant to the imaging of the object of investigation, which are aimed at improvement of the performance of the computing component of the endoscope. The fiber-optic version of ghost imaging considered here is suitable for investigating hard-to-reach abdomens and organs of human organism, which permit the introduction of a thin fiber-optic bundle, thus extending its applicability as compared to traditional optic endoscopic methods.</p>","PeriodicalId":629,"journal":{"name":"Journal of Experimental and Theoretical Physics","volume":"137 6","pages":"785 - 799"},"PeriodicalIF":1.0,"publicationDate":"2024-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139579367","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
On the Heat Capacity of Quantum Hard Sphere Fluid 论量子硬球流体的热容量
IF 1 4区 物理与天体物理
Journal of Experimental and Theoretical Physics Pub Date : 2024-01-26 DOI: 10.1134/S1063776123120130
S. M. Stishov
{"title":"On the Heat Capacity of Quantum Hard Sphere Fluid","authors":"S. M. Stishov","doi":"10.1134/S1063776123120130","DOIUrl":"10.1134/S1063776123120130","url":null,"abstract":"<p>The thermodynamic properties of the Boltzmann hard sphere system is discussed. It was found that zero point energy decreases with temperature so slowly that it turned out to be an almost a constant addition to the classical value. In result the heat capacity of the system differs little from the classical value of 3/2 k everywhere except for the narrow region of low temperatures, where heat capacity drops to zero. The predicted linear temperature contribution to the heat capacity like in ideal Fermi gas was clearly detected in the quantum hard sphere system at the lowest temperatures.</p>","PeriodicalId":629,"journal":{"name":"Journal of Experimental and Theoretical Physics","volume":"137 6","pages":"899 - 902"},"PeriodicalIF":1.0,"publicationDate":"2024-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139579421","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
Experimental Study of a Prototype of a Superconducting Sigma Neuron for Adiabatic Neural Networks 绝热神经网络超导西格玛神经元原型的实验研究
IF 1 4区 物理与天体物理
Journal of Experimental and Theoretical Physics Pub Date : 2024-01-26 DOI: 10.1134/S1063776123120191
A. S. Ionin, N. S. Shuravin, L. N. Karelina, A. N. Rossolenko, M. S. Sidel’nikov, S. V. Egorov, V. I. Chichkov, M. V. Chichkov, M. V. Zhdanova, A. E. Shchegolev, V. V. Bol’ginov
{"title":"Experimental Study of a Prototype of a Superconducting Sigma Neuron for Adiabatic Neural Networks","authors":"A. S. Ionin,&nbsp;N. S. Shuravin,&nbsp;L. N. Karelina,&nbsp;A. N. Rossolenko,&nbsp;M. S. Sidel’nikov,&nbsp;S. V. Egorov,&nbsp;V. I. Chichkov,&nbsp;M. V. Chichkov,&nbsp;M. V. Zhdanova,&nbsp;A. E. Shchegolev,&nbsp;V. V. Bol’ginov","doi":"10.1134/S1063776123120191","DOIUrl":"10.1134/S1063776123120191","url":null,"abstract":"<p>The artificial neuron proposed earlier for use in superconducting neural networks is experimentally studied. The fabricated sample is a single-junction interferometer, part of the circuit of which is shunted by an additional inductance, which is also used to generate an output signal. A technological process has been developed and tested to fabricate a neuron in the form of a multilayer thin-film structure over a thick superconducting screen. The transfer function of the fabricated sample, which contains sigmoid and linear components, is experimentally measured. A theoretical model is developed to describe the relation between input and output signals in a practical superconducting neuron. The derived equations are shown to approximate experimental curves at a high level of accuracy. The linear component of the transfer function is shown to be related to the direct transmission of an input signal to a measuring circuit. Possible ways for improving the design of the sigma neuron are considered.</p>","PeriodicalId":629,"journal":{"name":"Journal of Experimental and Theoretical Physics","volume":"137 6","pages":"888 - 898"},"PeriodicalIF":1.0,"publicationDate":"2024-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139579423","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
Computational–Experimental Study of the Liquid Drop Fragmentation Caused by an Air Shock Wave 空气冲击波导致液滴破碎的计算-实验研究
IF 1 4区 物理与天体物理
Journal of Experimental and Theoretical Physics Pub Date : 2024-01-26 DOI: 10.1134/S1063776123120014
K. V. Anisiforov, A. B. Georgievskaya, E. V. Levkina, N. V. Nevmerzhitskii, V. A. Raevskii, E. D. Sen’kovskii, E. A. Sotskov
{"title":"Computational–Experimental Study of the Liquid Drop Fragmentation Caused by an Air Shock Wave","authors":"K. V. Anisiforov,&nbsp;A. B. Georgievskaya,&nbsp;E. V. Levkina,&nbsp;N. V. Nevmerzhitskii,&nbsp;V. A. Raevskii,&nbsp;E. D. Sen’kovskii,&nbsp;E. A. Sotskov","doi":"10.1134/S1063776123120014","DOIUrl":"10.1134/S1063776123120014","url":null,"abstract":"<p>The fragmentation of a drop of liquid (water, alcohol, glycerin) under the action of an air shock wave with a pressure of 0.2 and 3.2 atmg is studied experimentally and theoretically. The experiments are carried out using an air shock tube, and the liquid drop diameter is approximately 0.6 and 2 mm. The process is studied using high-speed video recording. Dispersed liquid particles from ≈5 μm in size are detected, liquid particle size distributions are plotted, and the particle velocities are determined. The experimental results are compared with the results of computational–theoretical estimation.</p>","PeriodicalId":629,"journal":{"name":"Journal of Experimental and Theoretical Physics","volume":"137 6","pages":"940 - 955"},"PeriodicalIF":1.0,"publicationDate":"2024-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139579484","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
Reply to the Comment on the Article “On the Time Integral of Electromagnetic Field” (J. Exp. Theor. Phys. 136, 406 (2023)) 对 "论电磁场的时间积分"（J. Exp. Theor.136, 406 (2023))
IF 1 4区 物理与天体物理
Journal of Experimental and Theoretical Physics Pub Date : 2024-01-26 DOI: 10.1134/S1063776123120063
R. M. Feshchenko
{"title":"Reply to the Comment on the Article “On the Time Integral of Electromagnetic Field” (J. Exp. Theor. Phys. 136, 406 (2023))","authors":"R. M. Feshchenko","doi":"10.1134/S1063776123120063","DOIUrl":"10.1134/S1063776123120063","url":null,"abstract":"<p>Reply to the comment on the article “On the time integral of electromagnetic field,” J. Exp. Theor. Phys. <b>136</b>, 406 (2023)).</p>","PeriodicalId":629,"journal":{"name":"Journal of Experimental and Theoretical Physics","volume":"137 6","pages":"783 - 784"},"PeriodicalIF":1.0,"publicationDate":"2024-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139579315","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
Measurement Sensitivity of the Optically Detected Magnetic Resonance for a Single NV– Center in Diamond 金刚石中单个 NV 中心的光检测磁共振测量灵敏度
IF 1 4区 物理与天体物理
Journal of Experimental and Theoretical Physics Pub Date : 2024-01-26 DOI: 10.1134/S1063776123120221
N. S. Kukin, A. P. Muradova, A. K. Nikitin, A. A. Bukhtiyarov, P. A. Semenov, A. N. Vasiliev, N. I. Kargin, M. O. Smirnova, S. A. Terent’ev, S. A. Tarelkin, N. V. Kornilov
{"title":"Measurement Sensitivity of the Optically Detected Magnetic Resonance for a Single NV– Center in Diamond","authors":"N. S. Kukin,&nbsp;A. P. Muradova,&nbsp;A. K. Nikitin,&nbsp;A. A. Bukhtiyarov,&nbsp;P. A. Semenov,&nbsp;A. N. Vasiliev,&nbsp;N. I. Kargin,&nbsp;M. O. Smirnova,&nbsp;S. A. Terent’ev,&nbsp;S. A. Tarelkin,&nbsp;N. V. Kornilov","doi":"10.1134/S1063776123120221","DOIUrl":"10.1134/S1063776123120221","url":null,"abstract":"<p>The spectra of the optically detected magnetic resonance for single NV<sup>–</sup> centers have been experimentally studied in two solid-state samples in the range of hyperfine interactions between the electron spin and the nitrogen nucleus spin in the same NV<sup>–</sup> center. This study has been aimed at reaching a maximal microwave frequency resolution in the experimental setup used. For measurements, two low-nitrogen (no higher than 50 ppb) diamond single-crystal samples have been grown. Measured time <span>(T_{2}^{*})</span> of the spin decoherence in NV<sup>–</sup> centers was about 2 μs in one sample and 20 μs in the other. For both samples, the spectrum of the optically detected magnetic resonance for the hyperfine splitting of a single NV<sup>–</sup> center and <sup>14</sup>N atom has been taken and investigated. The resolution in these samples has been estimated at a level of 3.5 and 0.18 MHz, respectively. It has been noted that the resolution of the spectrum improves with increasing time <span>(T_{2}^{*})</span> of the spin decoherence of the single NV<sup>–</sup> center.</p>","PeriodicalId":629,"journal":{"name":"Journal of Experimental and Theoretical Physics","volume":"137 6","pages":"772 - 780"},"PeriodicalIF":1.0,"publicationDate":"2024-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139579435","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
Dynamics, Symmetry, and Shock-Induced Dusting at Quasi-Isentropic and Isentropic Acceleration of Cylindrical Liners 圆柱形衬垫在准等熵和等熵加速度下的动力学、对称性和冲击诱导的除尘
IF 1 4区 物理与天体物理
Journal of Experimental and Theoretical Physics Pub Date : 2024-01-26 DOI: 10.1134/S106377612312018X
S. V. Erunov, V. A. Ogorodnikov, A. O. Blikov, V. N. Knyazev, E. V. Kulakov, A. B. Georgievskaya, N. B. Davydov, A. S. Sokolova, E. A. Chudakov, M. V. Zhernokletov, A. V. Romanov, I. A. Blinov, V. A. Arinin, M. V. Antipov, A. P. Yavtushenko
{"title":"Dynamics, Symmetry, and Shock-Induced Dusting at Quasi-Isentropic and Isentropic Acceleration of Cylindrical Liners","authors":"S. V. Erunov,&nbsp;V. A. Ogorodnikov,&nbsp;A. O. Blikov,&nbsp;V. N. Knyazev,&nbsp;E. V. Kulakov,&nbsp;A. B. Georgievskaya,&nbsp;N. B. Davydov,&nbsp;A. S. Sokolova,&nbsp;E. A. Chudakov,&nbsp;M. V. Zhernokletov,&nbsp;A. V. Romanov,&nbsp;I. A. Blinov,&nbsp;V. A. Arinin,&nbsp;M. V. Antipov,&nbsp;A. P. Yavtushenko","doi":"10.1134/S106377612312018X","DOIUrl":"10.1134/S106377612312018X","url":null,"abstract":"<p>Two devices intended for copper cylindrical liner gasdynamic acceleration to velocities of 5–7 km/s using the chemicals explosion energy have been investigated. It has been demonstrated that the acceleration of quasi-isentropically and isentropically loaded liners under the conditions of high-level dynamics, symmetry of deposition, and suppression of shock-induced dusting is feasible.</p>","PeriodicalId":629,"journal":{"name":"Journal of Experimental and Theoretical Physics","volume":"137 6","pages":"956 - 965"},"PeriodicalIF":1.0,"publicationDate":"2024-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139579483","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
Monte Carlo Simulation of Energy Dissipation during the Cascade Decay of Inner-Shell Vacancies in an Iron Atom Placed in Water 放置在水中的铁原子内壳空位级联衰变过程中能量耗散的蒙特卡洛模拟
IF 1 4区 物理与天体物理
Journal of Experimental and Theoretical Physics Pub Date : 2024-01-26 DOI: 10.1134/S1063776123120178
A. P. Chaynikov, A. G. Kochur, A. I. Dudenko
{"title":"Monte Carlo Simulation of Energy Dissipation during the Cascade Decay of Inner-Shell Vacancies in an Iron Atom Placed in Water","authors":"A. P. Chaynikov,&nbsp;A. G. Kochur,&nbsp;A. I. Dudenko","doi":"10.1134/S1063776123120178","DOIUrl":"10.1134/S1063776123120178","url":null,"abstract":"<p>We have performed the Monte Carlo simulation of the processes of secondary ionization of water induced by cascade decays of inner-shell vacancies in an iron atom placed in water. We have obtained the spectra of electrons and photons emitted during the decay of vacancies in the <i>K</i> and <i>L</i> shells of the iron atom. The dependences of the number of secondary ionization events and the energy absorbed as a result of these processes on the radius of the sphere in which such processes occur have been calculated. The decay of a single 1<i>s</i> vacancy in an iron atom generates on the average 232 events of secondary ionization induced by an electron impact, in which the energy of 3274 eV is absorbed, as well as 18 secondary photoionization events, in which the energy of 256 eV is absorbed. The dependences of the dose absorbed in water on the distance from the iron atom have been calculated.</p>","PeriodicalId":629,"journal":{"name":"Journal of Experimental and Theoretical Physics","volume":"137 6","pages":"800 - 813"},"PeriodicalIF":1.0,"publicationDate":"2024-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140884306","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
Search for a New Internucleon Interaction Using Neutron Powder Diffraction 利用中子粉末衍射寻找新的核子间相互作用
IF 1 4区 物理与天体物理
Journal of Experimental and Theoretical Physics Pub Date : 2024-01-26 DOI: 10.1134/S1063776123120166
V. V. Voronin, D. D. Shapiro, S. Yu. Semenikhin, T. C. Hansen
{"title":"Search for a New Internucleon Interaction Using Neutron Powder Diffraction","authors":"V. V. Voronin,&nbsp;D. D. Shapiro,&nbsp;S. Yu. Semenikhin,&nbsp;T. C. Hansen","doi":"10.1134/S1063776123120166","DOIUrl":"10.1134/S1063776123120166","url":null,"abstract":"<p>The application of neutron powder diffraction to search for a new internucleon Yukawa-like interaction is considered. The essence of the method is in the investigation of dependency of the neutron scattering amplitude on the momentum transfer. The possible contributions to the scattering amplitude and to the integrated intensity of diffraction maxima were analyzed. The neutron diffraction experiment with silicon powder at D20 diffractometer of the ILL reactor (Grenoble, France) was performed. From the data obtained constraints on the coupling constant of the considered interaction were made. It is shown that in the interaction radius range of λ = 10<sup>–13</sup>–10<sup>—11</sup> m they improve the values already existing in the literature. The result obtained is limited by imperfections of the experimental setup. Eliminating the instrumental contribution may allow increasing the sensitivity of the method by at least an order of magnitude.</p>","PeriodicalId":629,"journal":{"name":"Journal of Experimental and Theoretical Physics","volume":"137 6","pages":"826 - 833"},"PeriodicalIF":1.0,"publicationDate":"2024-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139579241","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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