Шварцбург А. Б., Артеха С. Н., Н.С. Артеха, Инженерная физика 2020 Т. 4 С. 13–21
Выполнены теоретические расчёты возникновения низкочастотных резонансов
в прямоугольных полностью диэлектрических рамках, возбуждаемых линейнополяризованными электромагнитными волнами при скользящем падении. Показано, что токи смещения, генерируемые этими волнами в системе, приводят к образованию магнитного диполя, обладающего собственной резонансной частотой,
характерной для квазистационарных полей в ближней зоне рассеивающей рамки.
Рассчитаны возникающие при этом электрические и магнитные поля. ...
Added: May 18, 2023
Chulkova G., Елантьев А. И., Физика в школе 2022 № 6 С. 31–38
In the article, in the historical aspect, the main stages of the study and explanation of the rainbow phenomenon are considered. It is discussed how the development of ideas about the wave nature of light made it possible to explain all the features of the rainbow ...
Added: November 8, 2022
Muller J., Rotenberg E., Fyodor Tatarinov et al., New Phytologist 2021 Vol. 232 No. 6 P. 2535–2546
Temperature is a key control over biological activities from the cellular to the ecosystem
scales. However, direct, high-precision measurements of surface temperature of small objects,
such as leaves, under field conditions with large variations in ambient conditions remain rare.
Contact methods, such as thermocouples, are prone to large errors. The use of noncontact
remote-sensing methods, such as thermal infrared ...
Added: October 26, 2022
Kondratyev I., Moiseenko S. G., Бисноватый-Коган Г. С. et al., Monthly Notices of the Royal Astronomical Society 2020 Vol. 497 No. 3 P. 2883–2892
Determination of a magnetic field structure on a neutron star (NS) surface is an important problem of a modern astrophysics. In a presence of strong magnetic fields, a thermal conductivity of a degenerate matter is anisotropic. In this paper, we present 3D anisotropic heat transfer simulations in outer layers of magnetized NSs, and construct synthetic ...
Added: October 14, 2021
Panchenko M., Rosker S., Rucker H. O. et al., Astronomy and Astrophysics 2018 Vol. 610 No. A69 P. 1–9
We report the systematic analysis of zebra-like fine spectral structures in decametric frequency range of Jovian radio emission. Observations were performed by the large ground-based radio telescope URAN-2 during three observation campaigns between, Sep., 2012, and May, 2015. In total, 51 zebra pattern (ZP) events were detected. These rare fine radio features are observed in ...
Added: November 15, 2018
Zavyalov V., Журнал радиоэлектроники 2015 Т. 1 С. 1–10
The procedure of measurements and the formulas for calculating the sample's reflection (R) and transmission (T) coefficients with the use of a passive terahertz spectrometer are presented. The passive spectrometer comprises of cold and room-temperature chambers interconnected via a multimode waveguide (light pipe). Spectral selective liquid helium-cooled detector is placed at the cold side, ...
Added: November 10, 2018
Lapshinov B. A., Магунов А. Н., Захаров А. О., Микроэлектроника 2014 Т. 43 № 3 С. 200–206
Spectra of thermal radiation of monocrystals of the silicon which is heated up by a continuous laser bunch (a wavelength 1.064 microns), in a range of lengths of waves λ = 200-2500 nanometers are registered. The method of spectral pyrometry spends definition of temperatures of silicon in an interval Т= 900-1700 К.
Processing of sequence of ...
Added: June 19, 2014
Lapshinov B. A., Магунов А. Н., Пыльнев М. А., Приборы и техника эксперимента 2014 № 1 С. 128–132
The spectrometer with the bar of photodetectors consisting of 512 pixels on the basis of InGaAs, sensitive to infra-red radiation in the range of lengths of waves 0.9-2.5 microns, allows to register spectra of thermal radiation of objects with an unknown radiant emmittance and to calculate their temperatures close 400 To at time of accumulation ...
Added: June 19, 2014
Балакший В. И., Revenko A., Радиотехника и электроника 2010 Т. 55 № 7 С. 877–894
Light diffraction in a nonuniform acoustic field induced by a wedge shaped piezoelectric trans ducer is theoretically studied. Electric, acoustic, and acoustooptic characteristics of cells with such transducers are calculated. The emphasis is on the features of cell operation in the case when a piezoelectric plate is excited at the third harmonic. The acoustic field ...
Added: January 10, 2013
Lapshinov B. A., Magunov A. N., Zakharov A. O., Приборы и техника эксперимента 2012 № 1 С. 143–148
Recording of a sequence of thermal-radiation spectra allows determination of a nonstationary temperature T(t) without using the data on the emissivity of an object. For a КЭФ-4.5 silicon single crystal heated with radiation from a continuous-wave Nd:YAG laser (λ = 1.064 μm), sequences of hundreds of emission spectra in wavelength ranges of λ = 350–760 ...
Added: April 23, 2012
Solntsev V. A., Koltunov R. P., Радиотехника и электроника 2010 Т. 55 № 11 С. 1362–1375
A linear theory of the discrete interaction of electron beams and electromagnetic waves in slow-wave structures (SWS) is developed. The theory is based on the finite_difference equations of SWS excitation.The local coupling impedance entering these equations characterizes the field intensity excited by the electron beam in interaction gaps and has a finite value at SWS ...
Added: April 12, 2012
Solntsev V. A., В кн.: Актуальные проблемы электронного приборостроения АПЭП-2010. Материалы международной научно-технической конференции. 22-23 сентября 2010 г.: Саратов: Наука, 2010. С. 82–86.
Выведено уравнение в конечных разностях второго порядка, описывающее возбуждение периодических волноводов нестационарным продольным током. Показана его справедливость в полосах пропускания и запирания волноводов. ...
Added: April 12, 2012
Lapshinov B. A., Zakharov A. O., Magunov A. N., В кн.: INTERMATIC - 2011. Материалы Международной научно-технической конференции «Фундаментальные проблемы радиоэлектронного приборостроения», 14-17 ноября 2011 г., МоскваЧ. 1.: М.: МГТУ МИРЭА – ИРЭ РАН, 2011. С. 51–54.
Впервые проведена регистрация последовательности множества спектров теплового излучения при лазерном нагревании монокристалла кремния (время накопления единичного спектра 15-35 мс). Спектры фиксировались с помощью дифракционных спектрометров с ПЗС-линейками. Создана программа для автоматизированной обработки последовательности спектров и определения нестационарной температуры. Определены зависимости температуры монокристалла кремния от времени после начала нагревания. ...
Added: April 12, 2012