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The Dynamics of XUV Plasma Emission in a Low-Inductance Vacuum Spark at the Initial Stage of Discharge Development
Plasma Physics Reports. 2024. Vol. 50. No. 6. P. 742–748.
Анциферов П. С., Степанов Л. В., Матюхин Н. Д.
The emission dynamics of a vacuum spark with a peak current of ~50 kA in the wavelength range of λ = 5–40 nm is analyzed. The radiation was detected by means of the microchannel-plate detectors with a frame temporal resolution of 20 ns. The technique of simultaneous acquisition of the spatial distribution and spectrograms of plasma emission allowed resolving characteristic stages of discharge development. At the initial stage (200–300 ns), strong emission of multiply charged iron ions Fe V – Fe VIII is detected. This emission disappears later (300–400 ns) and reappears again after 400 ns. The possible role of runaway electrons in the described phenomenon is discussed. The found regime of the discharge can be used upon development of the radiation sources in the extreme UV range.
Степанов Л. В., Анциферов П. С., Матюхин Н. Д., Журнал технической физики 2025 № 7 С. 1297–1302
Описана установка для получения демпфированного вакуумного разряда с пиковым током 18 kA и длительностью меньше 1 μs. В таком разряде реализуется ранее обнаруженное явление возникновения многозарядных ионов в вакуумном разряде в условиях отсутствия пинчевания на стадии формирования разрядного столба плазмы. Основная идея заключается в быстром прекращении разрядного тока после этой стадии, что может позволить реализовать ...
Added: October 7, 2025
Khalutornykh L., Saakyan S., Nazarov A. et al., Journal of Quantitative Spectroscopy and Radiative Transfer 2025 No. 346 Article 109594
We present the first implementation of modulation transfer spectroscopy (MTS) on the D1 line of 7 Li, carried
out in a compact heat-pipe vapor cell with cold windows. By varying the pump and probe intensities and
polarization configurations, we systematically map the MTS error-signal amplitude, effective linewidth, and
slope for the ground-state crossover resonance 𝐹 = 1 × ...
Added: August 10, 2025
Viktor A. Frantsuzov, Artemyev A., Shi X. et al., Astrophysical Journal 2024 Vol. 963 No. 1 Article 16
The investigation of mechanisms responsible for the heating of cold solar wind electrons around the Earth’s bow shock is an important problem in heliospheric plasma physics because such heating is vitally required to run the shock drift acceleration at the bow shock. The prospective mechanism for electron heating is magnetic pumping, which considers electron adiabatic ...
Added: April 25, 2025
V. A. Frantsuzov, Artemyev A. V., P. I. Shustov et al., Physics of Plasmas 2022 Vol. 29 No. 5 Article 052901
Whistler-mode waves are one of the most intense electromagnetic waves in the planetary magnetospheres. These waves are responsible for energetic electron losses into the atmosphere and for electron acceleration up to relativistic energies. Generation of whistler-mode waves is typically attributed to the thermal electron anisotropy. The anisotropy corresponding to the marginal stability for whistler-mode waves ...
Added: April 25, 2025
Ferreira D., Joffrin E., Abduallev S. et al., Plasma Physics and Controlled Fusion 2021 Vol. 63 No. 8 Article 084006
In the fusion community, the use of high performance computing (HPC) has been mostly dominated by heavy-duty plasma simulations, such as those based on particle-in-cell and gyrokinetic codes. However, there has been a growing interest in applying machine learning for knowledge discovery on top of large amounts of experimental data collected from fusion devices. In ...
Added: January 31, 2023
Mazzi S., Garcia J., Zarzoso D. et al., Nature Physics 2022 Vol. 18 No. 7 P. 776–782
Alpha particles with energies on the order of megaelectronvolts will be the main source of plasma heating in future magnetic confinement fusion reactors. Instead of heating fuel ions, most of the energy of alpha particles is transferred to electrons in the plasma. Furthermore, alpha particles can also excite Alfvénic instabilities, which were previously considered to ...
Added: January 31, 2023
Vega J., Murari A., Dormido-Canto S. et al., Nature Physics 2022 No. 18 P. 741–750
In nuclear fusion reactors, plasmas are heated to very high temperatures of more than 100 million kelvin and, in so-called tokamaks, they are confined by magnetic fields in the shape of a torus. Light nuclei, such as deuterium and tritium, undergo a fusion reaction that releases energy, making fusion a promising option for a sustainable ...
Added: January 31, 2023
Joffrin E., Donne T., JET c., Nuclear Fusion 2019 Vol. 59 No. 11 P. 1–25
Added: December 21, 2022
Shustov P., Artemyev A., Volokitin A. et al., Physics of Plasmas 2022 Vol. 29 No. 012902 P. 1–10
Recent observations of hot plasma in Earth's magnetotail and magnetosheath demonstrate nonlinear sub-ion scale magnetic holes, spatially localized dips of magnetic field intensity. These structures resemble magnetosonic solitary waves, but do not include any significant density perturbations. Instead, the magnetic field depression is balanced by hot electron pressure. This study aims to investigate linear modes ...
Added: June 15, 2022
Яшкардин Р. В., Sorokin K., IEEE NW Russia Young Researchers in Electrical and Electronic Engineering Conference 2016 P. 736–739
a brief description of the principles of functioning of the device for producing an ultradispersive metal powders under the affection of powerful electrically charged energy streams is presented in the article. A method of creating a mathematical model of a device components for producing an ultrsadispersive particles is explained. A comparison of the results of ...
Added: October 15, 2021
Ponomarev A., Aleksandrov N. L., Journal of Physics D: Applied Physics 2020 Vol. 53 No. 5 Article 055203
The kinetics of and O− ions was addressed in air plasma in a rapidly time-varying electric field that is typical for nanosecond pulsed surface dielectric barrier discharges. Self-consistent sets of cross-sections for these ions in collisions with O2 and N2 molecules were developed. The Monte Carlo technique was used to calculate ion energy distribution, mean ion energy and reaction ...
Added: February 9, 2020
Lukin A.S., Artemyev A. V., Petrukovich A. A. et al., JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 2019 Vol. 124 No. 7 P. 5027–5041
One of the most important sources of magnetospheric plasma is particle entry through the distant magnetotail boundary, the nightside magnetopause. This entry mechanism depends on the magnetopause configuration. Off the equator, the strong lobe magnetic field renders the magnetopause a tangential or a rotational discontinuity, and thus the magnetosheath field orientation predominantly controls particle entry ...
Added: January 31, 2020
Sautenkov V. A., Shneider M. N., Saakyan S. A. et al., Optics Communications 2019 Vol. 431 P. 131–135
Self-focusing of cw laser beam in a rubidium atomic vapor was studied. The beam radius and power at the entrance of a rubidium vapor cell were variable parameters. A steep grow of the self-focusing threshold power for the small beam radius (≤ 30 μ m) was observed. Our experimental data are in a qualitative agreement ...
Added: October 26, 2019
Maevsky E., Кислов Р. А., Малова Х. В. et al., Cosmic Research 2018 Vol. 56 No. 6 P. 411–419
Abstract—Within the axisymmetric MHD model of the solar wind, the magnetic field of the Sun has been analyzed in two phases of the solar cycle: the minimum activity, when the dipole magnetic field dominates and the maximum activity, when the quadrupole field predominates. It has been shown that during the period of maximum solar activity, ...
Added: October 5, 2019
Maevsky E., Кислов Р. А., Малова Х. В. et al., Космические исследования 2018 Т. 56 № 6 С. 394–403
В рамках осесимметричной МГД-модели солнечного ветра проведен анализ магнитного поля Солнца в двух фазах солнечного цикла: минимума активности, когда доминирует дипольное магнитное поле и максимума, когда преобладает квадрупольное поле. Показано, что в период максимума солнечной активности гелиосферный токовый слой приобретает конусообразную форму и смещается в область высоких широт до 30 градусов над плоскостью эклиптики. В противоположном ...
Added: October 5, 2019
Maevsky E., Кислов Р. А., Малова Х. В. et al., Физика плазмы 2018 Т. 44 № 1 С. 89–101
В рамках стационарной осесимметричной МГД-модели солнечного ветра исследованы пространственное распределение магнитного поля, плотностей плазмы и тока на расстояниях от 20 до 400RS (радиусов Солнца) на всех гелиоширотах в инерциальной системе отсчета с началом в центре Солнца. В модели учтены неравномерное по гелиошироте вращение Солнца и полная коротация плазмы внутри граничной сферы радиусом в 20RS, нарушающаяся ...
Added: September 26, 2019