for Journals by Title or ISSN
for Articles by Keywords

 A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z  

       | Last   [Sort by number of followers]   [Restore default list]

  Subjects -> ELECTRONICS (Total: 152 journals)
Showing 1 - 200 of 277 Journals sorted alphabetically
Advances in Biosensors and Bioelectronics     Open Access   (Followers: 6)
Advances in Electrical and Electronic Engineering     Open Access   (Followers: 2)
Advances in Magnetic and Optical Resonance     Full-text available via subscription   (Followers: 9)
Advances in Microelectronic Engineering     Open Access   (Followers: 13)
Advances in Power Electronics     Open Access   (Followers: 28)
Aerospace and Electronic Systems, IEEE Transactions on     Hybrid Journal   (Followers: 237)
American Journal of Electrical and Electronic Engineering     Open Access   (Followers: 24)
Annals of Telecommunications     Hybrid Journal   (Followers: 7)
Archives of Electrical Engineering     Open Access   (Followers: 12)
Autonomous Mental Development, IEEE Transactions on     Hybrid Journal   (Followers: 8)
Bell Labs Technical Journal     Hybrid Journal   (Followers: 23)
Biomedical Engineering, IEEE Reviews in     Full-text available via subscription   (Followers: 17)
Biomedical Engineering, IEEE Transactions on     Hybrid Journal   (Followers: 33)
Biomedical Instrumentation & Technology     Hybrid Journal   (Followers: 6)
Broadcasting, IEEE Transactions on     Hybrid Journal   (Followers: 10)
BULLETIN of National Technical University of Ukraine. Series RADIOTECHNIQUE. RADIOAPPARATUS BUILDING     Open Access   (Followers: 1)
Bulletin of the Polish Academy of Sciences : Technical Sciences     Open Access  
Canadian Journal of Remote Sensing     Full-text available via subscription   (Followers: 45)
China Communications     Full-text available via subscription   (Followers: 7)
Circuits and Systems     Open Access   (Followers: 16)
Consumer Electronics Times     Open Access   (Followers: 6)
Control Systems     Hybrid Journal   (Followers: 200)
Edu Elektrika Journal     Open Access  
Electronic Design     Partially Free   (Followers: 85)
Electronic Markets     Hybrid Journal   (Followers: 8)
Electronic Materials Letters     Hybrid Journal   (Followers: 3)
Electronics     Open Access   (Followers: 68)
Electronics and Communications in Japan     Hybrid Journal   (Followers: 9)
Electronics For You     Partially Free   (Followers: 69)
Electronics Letters     Hybrid Journal   (Followers: 26)
Embedded Systems Letters, IEEE     Hybrid Journal   (Followers: 42)
Energy Harvesting and Systems : Materials, Mechanisms, Circuits and Storage     Hybrid Journal   (Followers: 4)
Energy Storage Materials     Full-text available via subscription   (Followers: 2)
EPJ Quantum Technology     Open Access  
EURASIP Journal on Embedded Systems     Open Access   (Followers: 12)
Facta Universitatis, Series : Electronics and Energetics     Open Access  
Foundations and Trends® in Communications and Information Theory     Full-text available via subscription   (Followers: 7)
Foundations and Trends® in Signal Processing     Full-text available via subscription   (Followers: 10)
Frequenz     Hybrid Journal   (Followers: 1)
Frontiers of Optoelectronics     Hybrid Journal   (Followers: 1)
Geoscience and Remote Sensing, IEEE Transactions on     Hybrid Journal   (Followers: 164)
Haptics, IEEE Transactions on     Hybrid Journal   (Followers: 3)
IEEE Antennas and Propagation Magazine     Hybrid Journal   (Followers: 82)
IEEE Antennas and Wireless Propagation Letters     Hybrid Journal   (Followers: 70)
IEEE Journal of Emerging and Selected Topics in Power Electronics     Hybrid Journal   (Followers: 35)
IEEE Journal of the Electron Devices Society     Open Access   (Followers: 9)
IEEE Journal on Exploratory Solid-State Computational Devices and Circuits     Hybrid Journal   (Followers: 1)
IEEE Power Electronics Magazine     Full-text available via subscription   (Followers: 54)
IEEE Transactions on Antennas and Propagation     Full-text available via subscription   (Followers: 61)
IEEE Transactions on Automatic Control     Hybrid Journal   (Followers: 53)
IEEE Transactions on Circuits and Systems for Video Technology     Hybrid Journal   (Followers: 17)
IEEE Transactions on Consumer Electronics     Hybrid Journal   (Followers: 36)
IEEE Transactions on Electron Devices     Hybrid Journal   (Followers: 16)
IEEE Transactions on Information Theory     Hybrid Journal   (Followers: 27)
IEEE Transactions on Power Electronics     Hybrid Journal   (Followers: 60)
IEEE Transactions on Signal and Information Processing over Networks     Full-text available via subscription   (Followers: 9)
IEICE - Transactions on Electronics     Full-text available via subscription   (Followers: 15)
IEICE - Transactions on Information and Systems     Full-text available via subscription   (Followers: 7)
IET Microwaves, Antennas & Propagation     Hybrid Journal   (Followers: 32)
IET Power Electronics     Hybrid Journal   (Followers: 33)
IET Wireless Sensor Systems     Hybrid Journal   (Followers: 18)
IETE Journal of Education     Open Access   (Followers: 4)
IETE Journal of Research     Open Access   (Followers: 11)
IETE Technical Review     Open Access   (Followers: 11)
IJEIS (Indonesian Journal of Electronics and Instrumentation Systems)     Open Access  
Industrial Electronics, IEEE Transactions on     Hybrid Journal   (Followers: 42)
Industry Applications, IEEE Transactions on     Hybrid Journal   (Followers: 11)
Informatik-Spektrum     Hybrid Journal   (Followers: 2)
Instabilities in Silicon Devices     Full-text available via subscription  
Intelligent Transportation Systems Magazine, IEEE     Full-text available via subscription   (Followers: 8)
International Journal of Advanced Research in Computer Science and Electronics Engineering     Open Access   (Followers: 18)
International Journal of Advances in Telecommunications, Electrotechnics, Signals and Systems     Open Access   (Followers: 8)
International Journal of Antennas and Propagation     Open Access   (Followers: 11)
International Journal of Applied Electronics in Physics & Robotics     Open Access   (Followers: 4)
International Journal of Computational Vision and Robotics     Hybrid Journal   (Followers: 4)
International Journal of Computer & Electronics Research     Full-text available via subscription   (Followers: 2)
International Journal of Control     Hybrid Journal   (Followers: 13)
International Journal of Electronics     Hybrid Journal   (Followers: 6)
International Journal of Electronics & Data Communication     Open Access   (Followers: 11)
International Journal of Electronics and Telecommunications     Open Access   (Followers: 13)
International Journal of Granular Computing, Rough Sets and Intelligent Systems     Hybrid Journal   (Followers: 2)
International Journal of High Speed Electronics and Systems     Hybrid Journal  
International Journal of Image, Graphics and Signal Processing     Open Access   (Followers: 10)
International Journal of Nano Devices, Sensors and Systems     Open Access   (Followers: 8)
International Journal of Nanoscience     Hybrid Journal   (Followers: 1)
International Journal of Numerical Modelling: Electronic Networks, Devices and Fields     Hybrid Journal   (Followers: 3)
International Journal of Power Electronics     Hybrid Journal   (Followers: 16)
International Journal of Sensors, Wireless Communications and Control     Hybrid Journal   (Followers: 8)
International Journal of Systems, Control and Communications     Hybrid Journal   (Followers: 3)
International Journal of Wireless and Microwave Technologies     Open Access   (Followers: 6)
International Journal on Communication     Full-text available via subscription   (Followers: 14)
International Journal on Electrical and Power Engineering     Full-text available via subscription   (Followers: 8)
International Transaction of Electrical and Computer Engineers System     Open Access   (Followers: 2)
Journal of Biosensors & Bioelectronics     Open Access   (Followers: 3)
Journal of Advanced Dielectrics     Open Access   (Followers: 1)
Journal of Artificial Intelligence     Open Access   (Followers: 10)
Journal of Circuits, Systems, and Computers     Hybrid Journal   (Followers: 4)
Journal of Computational Intelligence and Electronic Systems     Full-text available via subscription   (Followers: 1)
Journal of Electrical and Electronics Engineering Research     Open Access   (Followers: 19)
Journal of Electrical Bioimpedance     Open Access   (Followers: 2)
Journal of Electrical Engineering & Electronic Technology     Hybrid Journal   (Followers: 7)
Journal of Electromagnetic Analysis and Applications     Open Access   (Followers: 7)
Journal of Electromagnetic Waves and Applications     Hybrid Journal   (Followers: 6)
Journal of Electronics (China)     Hybrid Journal   (Followers: 4)
Journal of Energy Storage     Full-text available via subscription   (Followers: 3)
Journal of Field Robotics     Hybrid Journal   (Followers: 2)
Journal of Guidance, Control, and Dynamics     Full-text available via subscription   (Followers: 140)
Journal of Intelligent Procedures in Electrical Technology     Open Access   (Followers: 3)
Journal of Low Power Electronics     Full-text available via subscription   (Followers: 7)
Journal of Low Power Electronics and Applications     Open Access   (Followers: 7)
Journal of Microwaves, Optoelectronics and Electromagnetic Applications     Open Access   (Followers: 9)
Journal of Nuclear Cardiology     Hybrid Journal  
Journal of Optoelectronics Engineering     Open Access   (Followers: 2)
Journal of Physics B: Atomic, Molecular and Optical Physics     Hybrid Journal   (Followers: 31)
Journal of Semiconductors     Full-text available via subscription   (Followers: 4)
Journal of Sensors     Open Access   (Followers: 24)
Journal of Signal and Information Processing     Open Access   (Followers: 9)
Jurnal Rekayasa Elektrika     Open Access  
Learning Technologies, IEEE Transactions on     Hybrid Journal   (Followers: 14)
Magnetics Letters, IEEE     Hybrid Journal   (Followers: 7)
Majalah Ilmiah Teknologi Elektro : Journal of Electrical Technology     Open Access   (Followers: 2)
Metrology and Measurement Systems     Open Access   (Followers: 5)
Microelectronics and Solid State Electronics     Open Access   (Followers: 16)
Nanotechnology Magazine, IEEE     Full-text available via subscription   (Followers: 31)
Nanotechnology, Science and Applications     Open Access   (Followers: 6)
Networks: an International Journal     Hybrid Journal   (Followers: 5)
Open Journal of Antennas and Propagation     Open Access   (Followers: 8)
Optical Communications and Networking, IEEE/OSA Journal of     Full-text available via subscription   (Followers: 14)
Paladyn, Journal of Behavioral Robotics     Open Access   (Followers: 1)
Progress in Quantum Electronics     Full-text available via subscription   (Followers: 7)
Pulse     Full-text available via subscription   (Followers: 5)
Radiophysics and Quantum Electronics     Hybrid Journal   (Followers: 2)
Recent Patents on Electrical & Electronic Engineering     Full-text available via subscription   (Followers: 9)
Recent Patents on Telecommunications     Full-text available via subscription   (Followers: 2)
Security and Communication Networks     Hybrid Journal   (Followers: 3)
Selected Topics in Applied Earth Observations and Remote Sensing, IEEE Journal of     Hybrid Journal   (Followers: 51)
Semiconductors and Semimetals     Full-text available via subscription   (Followers: 1)
Sensing and Imaging : An International Journal     Hybrid Journal   (Followers: 2)
Services Computing, IEEE Transactions on     Hybrid Journal   (Followers: 5)
Software Engineering, IEEE Transactions on     Hybrid Journal   (Followers: 72)
Solid-State Circuits Magazine, IEEE     Hybrid Journal   (Followers: 12)
Solid-State Electronics     Hybrid Journal   (Followers: 8)
Superconductor Science and Technology     Hybrid Journal   (Followers: 2)
Synthesis Lectures on Power Electronics     Full-text available via subscription   (Followers: 3)
Technical Report Electronics and Computer Engineering     Open Access  
Telematique     Open Access  
TELKOMNIKA (Telecommunication, Computing, Electronics and Control)     Open Access   (Followers: 8)
Universal Journal of Electrical and Electronic Engineering     Open Access   (Followers: 6)
Visión Electrónica : algo más que un estado sólido     Open Access  
Wireless and Mobile Technologies     Open Access   (Followers: 5)
Women in Engineering Magazine, IEEE     Full-text available via subscription   (Followers: 13)
Електротехніка і Електромеханіка     Open Access  

       | Last   [Sort by number of followers]   [Restore default list]

Journal Cover Radiophysics and Quantum Electronics
  [SJR: 0.336]   [H-I: 11]   [2 followers]  Follow
   Hybrid Journal Hybrid journal (It can contain Open Access articles)
   ISSN (Print) 1573-9120 - ISSN (Online) 0033-8443
   Published by Springer-Verlag Homepage  [2354 journals]
  • Features of the Ionospheric Artificial Airglow Caused by Ohmic Heating and
           Plasma Turbulence-Accelerated Electrons Induced by HF Pumping of the Sura
           Heating Facility
    • Authors: V. V. Klimenko; S. M. Grach; E.N. Sergeev; A.V. Shindin
      Pages: 431 - 449
      Abstract: We present the results of studying the ionospheric F2 region airglow in the atomic-oxygen red line (λ = 6300Ǻ) when the ionosphere is pumped by high-power HF radio waves. Either thermal modulation of the background airglow brightness or, simultaneously with it, the red-line intensity enhancement were observed, depending on the ionospheric and plasma-wave parameters. Analysis of the red-line emission behavior makes it possible to separate the influence of the ohmic heating and acceleration of electrons by plasma turbulence on the airglow features.
      PubDate: 2017-11-01
      DOI: 10.1007/s11141-017-9812-0
      Issue No: Vol. 60, No. 6 (2017)
  • Generation of the Super Small-Scale Artificial Ionospheric Irregularities
           in the Ionosphere Pumped by High-Power HF Radio Waves
    • Authors: V. L. Frolov; I. A. Bolotin; G. G. Vertogradov; V. G. Vertogradov
      Pages: 450 - 455
      Abstract: We present the results of experimental studies of generation of super small-scale plasma-density irregularities in the ionospheric F2 region pumped by a high-power HF O-mode wave at frequencies close to the fourth gyroharmonic in the region of its interaction with the plasma. The experiments were performed using the Sura heating facility. The super small-scale irregularities were sounded by GPS satellite signals. It has been shown that super small-scale irregularities are excited with the most efficiency in the region of the magnetic zenith for the pump wave. The intensity of such irregularities and typical times of their development and decay are determined.
      PubDate: 2017-11-01
      DOI: 10.1007/s11141-017-9813-z
      Issue No: Vol. 60, No. 6 (2017)
  • Sporadic E S Layers at High Latitudes During a Magnetic Storm of March 17,
           2015 According to the Vertical and Oblique Ionospheric Sounding Data
    • Authors: D.V. Blagoveshchensky; O.A. Maltseva; M. M. Anishin; D.D. Rogov
      Pages: 456 - 466
      Abstract: We consider the behavior of the parameters of the ionospheric E s layers according to the vertical sounding at the Sodankylä observatory and oblique sounding at the Lovozero (Murmansk region)—Gor’kovskaya station (Leningrad region) path during a superstorm of March 17, 2015. Temporal and spatial behavior of these parameters is compared. It was found that the storm significantly distorted the normal course of variations of the sporadic E s layer characteristics. Specific behavior of the layers during a storm at points separated by about 300 km was detected. With the help of ray tracing calculations using the IRI model, oblique sounding ionograms were constructed for the radio path analyzed. Primary attention is given to the maximum usable frequency of the F 2 layer—MUF-F 2. Additionally, for the disturbed conditions where there is only a high-power E s layer on the experimental ionograms, the values of MUF-E s and the ratio K =MUF-E s/f o E s for various cutoff frequencies f o E s of the E s layer and its altitudes \( {h}_{E_s} \) are calculated within the framework of the well-known approximations. Calculations for the case of weak disturbance and semitransparent E s layers are carried out with the IRI model adapted to the current diagnostics parameters. It was found that the calculated and experimental values of MUF-F 2 are close to each other or coincide, while this cannot be said about MUF-E s. The calculated and experimental values of MUF-E s can be matched in the model of mirror reflection from a flat layer for intense layers and the model of the E layer for thick E s layers of low intensity.
      PubDate: 2017-11-01
      DOI: 10.1007/s11141-017-9814-y
      Issue No: Vol. 60, No. 6 (2017)
  • Methodical Errors of a High-Precision Airborne Radio Altimeter Operating
           at Low Altitudes Above the Sea Surface
    • Authors: A. I. Baskakov; A.A. Komarov; M. S. Mikhailov
      Pages: 467 - 474
      Abstract: When a high-precision airborne radio altimeter operates at low altitudes in the mode of measuring the sea-surface profile, the local time-dependent backscattering pattern is a characteristic of the reflecting properties of the sea surface in contrast to the majority of other cases where the irradiation spot is significantly greater than the typical sizes of the large-scale surface irregularities. In this case, the altitude estimate at the tracking-system output of the flying-vehicle radio altimeter is the sum of three terms, namely, the altitude to the mean level, the altitude-estimate shift, which varies in time as a function of the slopes of large-scale irregularities, and the component related to the surface topography. The current methodical error of the altitude estimation by the high-precision airborne radio altimeter at low altitudes can be calculated using the justified approximation of the sea-surface large-scale irregularities by a deterministic function.
      PubDate: 2017-11-01
      DOI: 10.1007/s11141-017-9815-x
      Issue No: Vol. 60, No. 6 (2017)
  • Use of the Phenomenon of Total Internal Light Reflection for Diagnostics
           of Sea Wind Waves
    • Authors: V. L. Weber
      Pages: 475 - 484
      Abstract: We develop a mathematical model for the formation of underwater images of a perturbed sea surface. On the basis of this model, a method for determination of statistical spatio-temporal characteristics of wind waves, which uses the phenomenon of total internal light reflection at the water—air interface, is proposed.
      PubDate: 2017-11-01
      DOI: 10.1007/s11141-017-9816-9
      Issue No: Vol. 60, No. 6 (2017)
  • Efficiency of the Systems of Active Compensation for Acoustic
           Monochromatic Signals
    • Authors: I. Sh. Fiks; G. E. Fiks
      Pages: 485 - 493
      Abstract: We study the efficiency of the systems of active compensation for acoustic monochromatic signals having inexactly known frequencies. The studies are performed in the frequency domain for openloop systems.
      PubDate: 2017-11-01
      DOI: 10.1007/s11141-017-9817-8
      Issue No: Vol. 60, No. 6 (2017)
  • Axisymmetric Resonance Reflector for Relativistic Gigawatt Backward-Wave
    • Authors: M. B. Goykhman; A. V. Gromov; V. V. Kladukhin; N. F. Kovalev; N. G. Kolganov; A. V. Palitsin
      Pages: 494 - 500
      Abstract: We discuss the properties of the resonance reflectors applied in high-power relativistic backward-wave oscillators. The obtained results were used to develop a resonance reflector in the form of a section of a coaxial waveguide for a relativistic backward-wave oscillator operated in the ten-centimeter wavelength range. The results of preliminary experiments agree well with the calculations.
      PubDate: 2017-11-01
      DOI: 10.1007/s11141-017-9818-7
      Issue No: Vol. 60, No. 6 (2017)
  • Mean-Frequency Shift of the Envelope Solitons in Media with Cubic Relaxing
    • Authors: S. N. Vlasov
      Pages: 501 - 505
      Abstract: We study the mean-frequency variation of the envelope solitons propagating in nonlinear media with relaxing cubic nonlinearities. It is shown that the mean frequency in the propagation cannot only decrease in the case of the positive nonlinearity coefficient, which was previously known, but also increase in the case of the negative nonlinearity coefficient, which is observed for the gravity waves on a liquid surface.
      PubDate: 2017-11-01
      DOI: 10.1007/s11141-017-9819-6
      Issue No: Vol. 60, No. 6 (2017)
  • Global Stability of a Synchronous Regime in Hub Clusters of the Power
    • Authors: A. S. Dmitrichev; D. G. Zakharov; V. I. Nekorkin
      Pages: 506 - 512
      Abstract: We study stability of a synchronous regime in hub clusters of the power networks, which are simulated by ensembles of phase oscillators. An approach allowing one to estimate the regions in the parameter space, which correspond to the global asymptotic stability of this regime, is presented. The method is illustrated by an example of a hub cluster consisting of one generator and two consumers.
      PubDate: 2017-11-01
      DOI: 10.1007/s11141-017-9820-0
      Issue No: Vol. 60, No. 6 (2017)
  • Refraction of Radio Waves on the Radio-Occultation Satellite-to-Satellite
           Paths as a Characteristic of the Atmospheric State
    • Authors: S. S. Matyugov; O. I. Yakovlev; A. G. Pavelyev; A. A. Pavelyev; V. A. Anufriev
      Pages: 347 - 354
      Abstract: We present the results of analyzing the radio-wave refractive characteristics measured on the radio-occultation paths between the GPS navigation satellites and the FORMOSAT-3 research satellites in the central region of the European territory of Russia in 2007–2013. The diurnal, seasonal, and annual variations in the refraction angle at altitudes of 2 to 25 km are discussed. It is shown that the refraction angle can be used as an independent characteristic of the atmospheric state and its long-term variation trends. Diurnal and nocturnal variations in the refraction angle in the winter and summer seasons are analyzed. Trends in the atmospheric refraction variations over seven years are discussed.
      PubDate: 2017-10-01
      DOI: 10.1007/s11141-017-9805-z
      Issue No: Vol. 60, No. 5 (2017)
  • Impact of a Strong Magnetic Storm and Two X-Ray Flares on the Ionospheric
           HF Channel in the Summer Solstice of 2015 According to Oblique Sounding in
           the Eurasian Region
    • Authors: V. P. Uryadov; A. A. Kolchev; G. G. Vertogradov; F. I. Vybornov; I. A. Egoshin; M. S. Sklyarevsky; V. V. Shumaev; A. G. Chernov
      Pages: 355 - 373
      Abstract: We present the results of observations of the impact a strong magnetic storm and two X-ray flares in the summer solstice of 2015 on the HF signal characteristics during oblique sounding of the ionosphere in the Eurasian region. It was found that the negative phase of the magnetic storm led to a strong degradation of the ionospheric channel, up to a long blackout on the paths adjacent to the subauroral latitudes. On the midlatitude paths, a decrease in the maximum observable frequency of the F layer reached 50% with respect to the average values for an undisturbed ionosphere. The propagation velocity of the negative phase of a disturbance from the subauroral to the midlatitude ionosphere is determined (it is equal to about 100 m/s). It is shown that during a magnetic storm the least observable frequency and the average signal-to-noise ratio for the propagation mode via the sporadic E s layer correlate well with the auroral AE index. Anomalous signals were detected in the main phase of the magnetic storm on the Cyprus—Rostov-on-Don path when a chirp ionosonde–radio direction finder was operated in the over-the-horizon HF radar mode. On the basis of modeling and comparison with experimental data, it is shown that the anomalous signals are due to scattering of radio waves by small-scale irregularities located in the subauroral ionospheric F region.
      PubDate: 2017-10-01
      DOI: 10.1007/s11141-017-9806-y
      Issue No: Vol. 60, No. 5 (2017)
  • Lightning-Discharge Initiation as a Noise-Induced Kinetic Transition
    • Authors: D. I. Iudin
      Pages: 374 - 394
      Abstract: The electric fields observed in thunderclouds have the peak values one order of magnitude smaller than the electric strength of air. This fact renders the issue of the lightning-discharge initiation one of the most intriguing problems of thunderstorm electricity. In this work, the lightning initiation in a thundercloud is considered as a noise-induced kinetic transition. The stochastic electric field of the charged hydrometeors is the noise source. The considered kinetic transition has some features which distinguish it from other lightning-initiation mechanisms. First, the dynamic realization of this transition, which is due to interaction of the electron and ion components, is extended for a time significantly exceeding the spark-discharge development time. In this case, the fast attachment of electrons generated by supercritical bursts of the electric field of hydrometeors is balanced during long-term time intervals by the electron-release processes when the negative ions are destroyed. Second, an important role in the transition kinetics is played by the stochastic drift of electrons and ions caused by the small-scale fluctuations of the field of charged hydrometeors. From the formal mathematical viewpoint, this stochastic drift is indistinguishable from the scalar-impurity advection in a turbulent flow. In this work, it is shown that the efficiency of “advective mixing” is several orders of magnitude greater than that of the ordinary diffusion. Third, the considered transition leads to a sharp increase in the conductivity in the exponentially rare compact regions of space against the background of the vanishingly small variations in the average conductivity of the medium. In turn, the spots with increased conductivity are polarized in the mean field followed by the streamer initiation and discharge contraction.
      PubDate: 2017-10-01
      DOI: 10.1007/s11141-017-9807-x
      Issue No: Vol. 60, No. 5 (2017)
  • Nonadiabatic Electron-Optical System of a Technological Gyrotron
    • Authors: A. L. Goldenberg; M.Yu. Glyavin; K. A. Leshcheva; V. N. Manuilov
      Pages: 395 - 400
      Abstract: We consider a new version of the nonadiabatic system for the formation of a helical electron beam in a gyrotron, in which electrons acquire initial oscillatory velocities when a rectilinear beam is injected at an angle to the magnetic field. In such an electron gun, the influence of thermal electron velocities and roughness of the emitting surface can be decreased, as compared with the conventional electron-optical systems of gyrotrons. This makes it possible to increase significantly the system efficiency. The main factors affecting the quality of the formed beam are considered.
      PubDate: 2017-10-01
      DOI: 10.1007/s11141-017-9808-9
      Issue No: Vol. 60, No. 5 (2017)
  • The Diamond Window with Boron-Doped Layers for the Output of Microwave
           Radiation at High Peak and Average Power Levels
    • Authors: O.A. Ivanov; S. V. Kuzikov; A. A. Vikharev; A. L. Vikharev; M. A. Lobaev
      Pages: 401 - 408
      Abstract: We propose a novel design of the barrier window for the output of microwave radiation at high peak and average power levels. A window based on a plate of polycrystalline CVD diamond with thin (nanometer-thick) boron-doped layers with increased conductivity is considered. Such a window, which retains the low radiation loss due to the small total thickness of the conductive layers and the high thermal conductivity inherent in diamond, prevents accumulation of a static charge on its surface, on the one hand, and allows one to produce a static electric field on the surface of the doped layer, which impedes the development of a multipactor discharge, on the other hand. In this case, a high level of the power of the transmitted radiation and a large passband width are ensured by choosing the configuration of the field in the form of a traveling wave inside the window.
      PubDate: 2017-10-01
      DOI: 10.1007/s11141-017-9809-8
      Issue No: Vol. 60, No. 5 (2017)
  • Determination of the Boundary Transition Temperatures in Polypropylene on
           the Basis of Measurements in the Terahertz Band
    • Authors: M. S. Kitai; M. M. Nazarov; P. M. Nedorezova; A. P. Shkurinov
      Pages: 409 - 416
      Abstract: We propose a method for determination of the boundary temperatures of transitions in the structure of polymers by means of analyzing the refractive index of these materials in the terahertz band. The temperatures of glass transition, crystallization, and melting are determined experimentally for isotactic and syndiotactic polypropylenes. Such polymers have low absorption coefficients in the terahertz band. The behavior of intermolecular oscillations of the macromolecules, which are active in polymer spectra in this frequency band, is analyzed.
      PubDate: 2017-10-01
      DOI: 10.1007/s11141-017-9810-2
      Issue No: Vol. 60, No. 5 (2017)
  • The Time Dependence of a Quasimonochromatic Signal in the Region of
           Destructive Two-Beam Interference
    • Authors: N. S. Bukhman
      Pages: 417 - 429
      Abstract: We consider the time dependence of a total signal from two point acoustic sources emitting similar quasimonochromatic signals (two-beam interference of quasimonochromatic waves). It is shown that the time dependence of the envelope function of the total signal is close to the time dependence of the envelope function of the signal from one source with accuracy up to the delay time. The delay time varies within the limits from the usual (geometric) time in the light bands of the interference field (the constructive-interference region) to the zero one (within the framework of the considered approximations) in the dark bands (the destructive-interference region). At the intermediate points of the interference field, the delay time appears to be complex, i.e., the signal is not only shifted in time, but also distorted.
      PubDate: 2017-10-01
      DOI: 10.1007/s11141-017-9811-1
      Issue No: Vol. 60, No. 5 (2017)
  • Characteristics of the Energy-Like Detector of a Gaussian Signal Against
           the Background of Likhter Noise
    • Authors: V. I. Kostylev; I. P. Gres’
      Abstract: We propose an energy-like detector of signals and analyze its efficiency by an example of detecting a Gaussian signal with zero mathematical expectation and uncorrelated readouts against the background of Likhter noise with independent readouts. Analytical expressions for the probability of correct detection are obtained and statistical simulation is performed. Using particular examples, we show that the energy-like detection characteristics can be much closer to the optimal ones than those of the energy detection.
      PubDate: 2017-10-09
      DOI: 10.1007/s11141-017-9804-0
  • Properties of the Circumsolar Plasma Turbulence and Plasma Waves According
           to the Coronal Sounding Experiments Using Spacecraft Signals
    • Authors: O. I. Yakovlev
      Abstract: We report on the results of studying the circumsolar plasma turbulence according to the coronal sounding experiments using spacecraft signals. Statistical characteristics of the temporal fluctuation spectra of the amplitude, phase, frequency, and Faraday rotation angle of the radio-wave polarization plane are described for the solar offset distances of the ray path in the range between 3 and 40 solar radii. Information on the turbulence spectra is given and the spectral index, as well as the outer and inner turbulence scales, as functions of the heliocentric distance are presented. The effect on the measured parameters of the plasma waves is discussed and typical values of the wave periods for different distances from the Sun are given.
      PubDate: 2017-10-09
      DOI: 10.1007/s11141-017-9797-8
  • Backscattering Effects in Media with Strongly Elongated Scattering
    • Authors: Yu. A. Ilyushin
      Abstract: We consider the weak localization and the backscattering halo in media with strongly elongated scattering indicatrices. The earlier theory is generalized to the case of a nonuniform backscattering cross section in the rear hemisphere. Asymptotic formulas for the backscattering intensities are obtained in the low-angle diffusion approximation.
      PubDate: 2017-10-09
      DOI: 10.1007/s11141-017-9802-2
  • Excitation of Artificial Ionospheric Turbulence in the High-Latitude
           Ionospheric F Region as a Function of the Eiscat/Heating Effective
           Radiated Power
    • Authors: T. D. Borisova; N. F. Blagoveshchenskaya; T. K. Yeoman; I. Häggström
      Abstract: We present the results of experimental studies of the parameters of HF-enhanced ion–acoustic and Langmuir plasma waves, as well as small-scale artificial field-aligned irregularities (AFAIs) when the EISCAT/Heating effective radiated power is varied from 10 to 560 MW. In the course of the experiments, a high-power HF radio wave with the alternating ordinary (O-mode) and extraordinary (X-mode) polarizations was radiated towards the magnetic zenith at a frequency of 7.953 MHz lying below the cutoff frequency of the F2 layer. A fundamental difference in the development of artificial ion–acoustic and Langmuir turbulence, which is seen as HF-enhanced ion and plasma lines in the EISCAT spectra, under the O- and X-mode HF pumping was found. The minimum values of the HF pump-wave electric fields in the ionosphere when the HF-enhanced ion and plasma lines, as well as small-scale artificial field-aligned irregularities, start to be excited, were determined from experimental data both for the O- and X-mode HF pumping. Comparison between the experimental and theoretical threshold values of the electric field required for the excitation of artificial ionospheric turbulence in thermal, Langmuir, and ion–acoustic modes in the high-latitude ionospheric F2 layer for the O-mode HF pump wave was made.
      PubDate: 2017-10-09
      DOI: 10.1007/s11141-017-9798-7
School of Mathematical and Computer Sciences
Heriot-Watt University
Edinburgh, EH14 4AS, UK
Tel: +00 44 (0)131 4513762
Fax: +00 44 (0)131 4513327
Home (Search)
Subjects A-Z
Publishers A-Z
Your IP address:
About JournalTOCs
News (blog, publications)
JournalTOCs on Twitter   JournalTOCs on Facebook

JournalTOCs © 2009-2016