{"title":"Correction to: Pulses of the Electromagnetic Field with a Non-Zero Electric Area","authors":"A. B. Plachenov, N. N. Rosanov","doi":"10.1007/s11141-023-10275-7","DOIUrl":"10.1007/s11141-023-10275-7","url":null,"abstract":"","PeriodicalId":748,"journal":{"name":"Radiophysics and Quantum Electronics","volume":"66 1","pages":"77 - 77"},"PeriodicalIF":0.8,"publicationDate":"2023-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71909798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. D. Slyusareva, M. Yu. Emelin, A. S. Emelina, M. Yu. Ryabikin
{"title":"Coulomb and Quantum Interference Effects in the Spectra of High-Order Harmonics Generated by Aligned Molecules","authors":"A. D. Slyusareva, M. Yu. Emelin, A. S. Emelina, M. Yu. Ryabikin","doi":"10.1007/s11141-023-10274-8","DOIUrl":"10.1007/s11141-023-10274-8","url":null,"abstract":"<div><div><p>We study theoretically the features of the spectra of high-order harmonics of laser radiation generated in an ensemble of aligned diatomic molecules outside the framework of the strong-field approximation. The studies were carried out on the basis of numerical calculations within the framework of a model given by a two-center generalization of the Yukawa potential. Influence of the interference of contributions from different electron trajectories and the ion core potential on the accuracy of extracting spectroscopic information about the state of the nuclear subsystem of a molecule using high temporal resolution nonlinear spectroscopy based on the analysis of multicenter effects in the spectra of high-order harmonics has been explored.</p></div></div>","PeriodicalId":748,"journal":{"name":"Radiophysics and Quantum Electronics","volume":"66 1","pages":"52 - 62"},"PeriodicalIF":0.8,"publicationDate":"2023-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71909799","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Excitation of Electromagnetic Oscillations of a Dielectric Ball by a Complex Oscillation of a Radial Dipole","authors":"G. F. Zargano, A. V. Kharlanov","doi":"10.1007/s11141-023-10272-w","DOIUrl":"10.1007/s11141-023-10272-w","url":null,"abstract":"<div><div><p>We consider excitation of electromagnetic oscillations of a homogeneous dielectric ball by a radial dipole, oscillations forming a periodic sequence of radio pulses. It is shown that at high frequencies the field distribution is close to the field distribution of the eigenoscillations corresponding to these frequencies, whereas the neighboring harmonics also have an impact at low frequencies. It is also shown that an action at low frequencies characterized by a low Q-factor is needed for exciting short radio pulses in the resonator.</p></div></div>","PeriodicalId":748,"journal":{"name":"Radiophysics and Quantum Electronics","volume":"66 1","pages":"29 - 38"},"PeriodicalIF":0.8,"publicationDate":"2023-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71909801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Bifurcations and Chaos in Open Quantum Systems","authors":"I. I. Yusipov, S. V. Denisov, M. V. Ivanchenko","doi":"10.1007/s11141-023-10276-6","DOIUrl":"10.1007/s11141-023-10276-6","url":null,"abstract":"<div><div><p>A study of open quantum systems and dynamical regimes that emerge in such systems is an actively developing field of the theoretical and experimental physics. Although the bifurcation analysis and the theory of dynamical chaos are very important branches of nonlinear dynamics, their use for describing the processes occurring in open dissipative quantum systems has been restricted until recently. In this work, we present a review of recent results on the generalization of the methods of the oscillation theory for such systems. We present quantum analogs of the classical bifurcations, which are observed in the structural changes of the asymptotic density matrix, namely, the pitchfork bifurcation, saddle-node bifurcation, transition to quantum chaos via a period-doubling cascade, and the Neimark–Sacker bifurcation. We also consider numerical characteristics of dissipative quantum chaos. The largest quantum Lyapunov exponent, which is based on analyzing the divergence rate of the initially close quantum trajectories, allows one to numerically study the structure of the regular and chaotic domains of various open quantum systems. Numerical characteristics of dissipative quantum chaos, which can be observed in a physical experiment, are also considered. It is shown that the qualitatively different statistics of the distribution of times between the successive emissions of individual photons by the system take place for the regular and chaotic regimes in an open quantum cavity.</p></div></div>","PeriodicalId":748,"journal":{"name":"Radiophysics and Quantum Electronics","volume":"66 1","pages":"63 - 76"},"PeriodicalIF":0.8,"publicationDate":"2023-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71909712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"On the Problem of Inhomogeneous Spatial Distribution of the Redox Index of Polyvalent Iron Ions in the Volume of Ultrapure Synthetic Quartz Materials","authors":"K. V. Vlasova, A. I. Makarov, N. F. Andreev","doi":"10.1007/s11141-023-10273-9","DOIUrl":"10.1007/s11141-023-10273-9","url":null,"abstract":"<div><div><p>We show that the strong spatial inhomogeneity of absorption (the change from the maximum to the minimum value was more than 50 times on a spatial scale of the order of 200–300 μm), which was observed in our earlier studies of ultrapure synthetic quartz glasses and a synthetic quartz crystal at a wavelength of 1070 nm, can be related to an inhomogeneous spatial distribution of the redox state of iron traces. Using experimental data on absorption of metal impurities in the studied glasses, we present a calculation of the iron ion concentration, which is of the order of a few ppb. This is several times better than the limit of detection of the mass spectrometry method used for certification of ultrapure quartz glasses. Based on the results of the mass spectrometry measurements of concentrations given by manufacturers and the values of the maximum (10<sup>−5</sup> cm<sup>−1</sup>) and minimum (10<sup>−7</sup> cm<sup>−1</sup>) absorption coefficient we have measured, we calculated the maximum possible concentrations of the Fe<sup>2+</sup> and Cu<sup>2+</sup> ions and OH groups in quartz glasses and hydrothermal synthetic crystalline quartz.</p></div></div>","PeriodicalId":748,"journal":{"name":"Radiophysics and Quantum Electronics","volume":"66 1","pages":"39 - 51"},"PeriodicalIF":0.8,"publicationDate":"2023-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71909713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
V. Yu. Zaslavsky, M. D. Proyavin, D. I. Sobolev, I. V. Zheleznov, A. M. Malkin, A. S. Sergeyev, V. E. Kotomina, A. A. Orlovsky, N. S. Ginzburg
{"title":"Observation of Excitation of Eigenmodes in Surface-Wave Resonators Having the Cylindrical Geometry","authors":"V. Yu. Zaslavsky, M. D. Proyavin, D. I. Sobolev, I. V. Zheleznov, A. M. Malkin, A. S. Sergeyev, V. E. Kotomina, A. A. Orlovsky, N. S. Ginzburg","doi":"10.1007/s11141-023-10271-x","DOIUrl":"10.1007/s11141-023-10271-x","url":null,"abstract":"<div><div><p>We present the results of theoretical and experimental studies of the surface-wave <i>K</i><sub>a</sub>-band resonators which are formed by sections of cylindrical waveguides with single-period wall corrugations. The electrodynamic characteristics of such resonance cavities are analyzed within the quasioptical approach and three-dimensional simulation by the finite-difference time-domain method. The results of the theoretical analysis agree quite well with the experimentally measured frequency dependences of the reflection coefficients, which demonstrate the existence of surface modes with different numbers of longitudinal field variations. The measured Q-factors and frequencies of the above-specified modes corresponded well to the calculated values. In order to perform “cold” electrodynamic tests, wideband waveguide converters of the TE mode of the standard rectangular waveguide to the TM mode of an oversized cylindrical waveguide, which have a sufficiently low level of ohmic loss at a conversion efficiency exceeding 95% in the 34–40 GHz frequency range, were manufactured by the the 3D printing method.</p></div></div>","PeriodicalId":748,"journal":{"name":"Radiophysics and Quantum Electronics","volume":"66 1","pages":"19 - 28"},"PeriodicalIF":0.8,"publicationDate":"2023-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71909714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
R. S. Zemskov, S. E. Perevalov, A. V. Kotov, S. B. Bodrov, A. N. Stepanov, A. A. Solov’ev, M. I. Bakunov, A. G. Luchinin, V. N. Ginzburg, A. A. Kuz’min, I. V. Yakovlev, S. E. Stukachev, A. A. Kochetkov, I. A. Shaikin, A. A. Shaykin, E. A. Khazanov, M. Yu. Glyavin, N. V. Chekmarev, A. V. Vodop’yanov, M. V. Starodubtsev
{"title":"Experimental Study of Terahertz Radiation Generation in the Interaction of Ultrashort Laser Pulse with Gas Targets","authors":"R. S. Zemskov, S. E. Perevalov, A. V. Kotov, S. B. Bodrov, A. N. Stepanov, A. A. Solov’ev, M. I. Bakunov, A. G. Luchinin, V. N. Ginzburg, A. A. Kuz’min, I. V. Yakovlev, S. E. Stukachev, A. A. Kochetkov, I. A. Shaikin, A. A. Shaykin, E. A. Khazanov, M. Yu. Glyavin, N. V. Chekmarev, A. V. Vodop’yanov, M. V. Starodubtsev","doi":"10.1007/s11141-023-10264-w","DOIUrl":"10.1007/s11141-023-10264-w","url":null,"abstract":"<div><div><p>We present the first experimental results obtained with a setup created on the basis of the PEARL laser facility for studying the processes of generating terahertz radiation from laser wake fields which are formed during the propagation of a high-power femtosecond laser pulse in a rarefied plasma. In particular, the occurrence of terahertz generation in the case where the laser–plasma interaction region is located between a pair of dielectric prisms of total internal reflection is demonstrated. The dependence of the terahertz radiation energy on the energy of a femtosecond laser pulse and on the plasma density is studied.</p></div></div>","PeriodicalId":748,"journal":{"name":"Radiophysics and Quantum Electronics","volume":"65 12","pages":"877 - 887"},"PeriodicalIF":0.8,"publicationDate":"2023-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50522102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Absorption of a Narrow-Band Signal in a Dispersive Medium","authors":"N. S. Bukhman","doi":"10.1007/s11141-023-10266-8","DOIUrl":"10.1007/s11141-023-10266-8","url":null,"abstract":"<div><div><p>We consider propagation and absorption of a narrow-band signal in a homogeneous dispersive medium. It is shown that all signals can be divided into two qualitatively different classes, namely, holonomic and piecewise-holonomic signals. When propagating in an absorbing medium, the holonomic signals are attenuated obeying an exponential law and, therefore, almost disappear at a sufficient long path lengths. The piecewise-holonomic signals are attenuated significantly slower (obeying a hyperbolic law) and, therefore, continue to exist even at substantially longer paths.</p></div></div>","PeriodicalId":748,"journal":{"name":"Radiophysics and Quantum Electronics","volume":"65 12","pages":"897 - 910"},"PeriodicalIF":0.8,"publicationDate":"2023-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50522104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Čerenkov Radiation of an Ultrashort Laser Pulse Propagating in a Strongly Magnetized Plasma at Various Intensities and Directions of the Magnetic Field","authors":"A. D. Sladkov, A. V. Korzhimanov","doi":"10.1007/s11141-023-10265-9","DOIUrl":"10.1007/s11141-023-10265-9","url":null,"abstract":"<div><div><p>We study generation of Čerenkov radiation by an ultrashort laser pulse propagating in the magnetized plasma across an external magnetic field basing on the analysis of the dispersion relation and numerical simulation in the case where the cyclotron frequency exceeds the plasma frequency. It is shown that the radiation with a frequency in the range from the plasma frequency to the cyclotron one and with an angle between the wavevector and propagation direction below 45° can escape the plasma. The radiation power increases with the magnetic field before reaching the maximum at the cyclotron frequency being of the order of the inverse of the laser pulse duration and starts decreasing afterwards. It is also observed that, with an increase in the field, the pattern of the radiation escaping from the plasma narrows, the generated pulse is shortened, and the pulse spectrum widens.</p></div></div>","PeriodicalId":748,"journal":{"name":"Radiophysics and Quantum Electronics","volume":"65 12","pages":"888 - 896"},"PeriodicalIF":0.8,"publicationDate":"2023-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50522103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Pulses of the Electromagnetic Field with a Non-Zero Electric Area","authors":"A. B. Plachenov, N. N. Rosanov","doi":"10.1007/s11141-023-10267-7","DOIUrl":"10.1007/s11141-023-10267-7","url":null,"abstract":"<div><div><p>We analyze the possibility of existence of electromagnetic-field pulses with a non-zero electric area (time integral of the electric field) within the framework of the Maxwell equations. It is demonstrated that in the absence of charges and currents in vacuum, the non-zero electric area of a pulse would lead to its infinite energy. A pulse with the non-zero area is shown to form already in the case of uniform and rectilinear motion of the charge. The conditions for formation of such pulses by a localized charge system are found, and an example of such a system is presented. The asymptotics of the electric area far from the system of charges is obtained.</p></div></div>","PeriodicalId":748,"journal":{"name":"Radiophysics and Quantum Electronics","volume":"65 12","pages":"911 - 921"},"PeriodicalIF":0.8,"publicationDate":"2023-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50522105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}