M. E. Gushchin
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View article: Generation of subnanosecond electromagnetic pulses by a meter-long laboratory spark discharge: A source in the near-cathode region
Generation of subnanosecond electromagnetic pulses by a meter-long laboratory spark discharge: A source in the near-cathode region Open
Ultra-wideband (UWB) subnanosecond electromagnetic pulses (EMPs) generated by a 1.3 m long positive spark discharge with a Marx generator having an operating voltage of about 1 MV are studied experimentally. Special electric and magnetic p…
View article: Generation of whistlers by pulsed rf heating of electrons in a large laboratory magnetoplasma
Generation of whistlers by pulsed rf heating of electrons in a large laboratory magnetoplasma Open
We study the large-scale co-evolution of the system of currents, magnetic fields, and density perturbations arising from pulsed rf plasma heating using a loop antenna in the experiments at the Krot plasma device. Localized heating of elect…
View article: Experimental demonstration of the “unipolar cell” dynamics in a large laboratory magnetoplasma
Experimental demonstration of the “unipolar cell” dynamics in a large laboratory magnetoplasma Open
The nonambipolar or “unipolar” particle transport accompanied by excitation of a system of eddy (short-circuit) currents can ensure the fast dynamics of small-scale magnetoplasma disturbances arising under pulsed localized rf heating, and …
View article: Radiofrequency Diagnostic of the Decaying Plasma in the “Gigantic” Coaxial Line at the Large Plasma Device
Radiofrequency Diagnostic of the Decaying Plasma in the “Gigantic” Coaxial Line at the Large Plasma Device Open
At the large-scale Krot facility (Gaponov-Grekhov Institute of Applied Physics of the Russian Academy of Sciences), a new device was developed for laboratory simulations of the effects of the interaction of ultrawideband electromagnetic pu…
View article: Experimental simulation of the generation of microwave radiation during the interaction of a lightning discharge with an aircraft
Experimental simulation of the generation of microwave radiation during the interaction of a lightning discharge with an aircraft Open
On a specialized testing installation — a high-voltage Marx generator, which allows the formation of a spark discharge up to 20 meters long, the process of the impact of lightning radio emission in the microwave range on an aircraft (AC) i…
View article: Transformation of the Shape and Spectrum of an Ultrawideband Electromagnetic Pulse in a “Gigantic” Coaxial Line Filled with Magnetized Plasma
Transformation of the Shape and Spectrum of an Ultrawideband Electromagnetic Pulse in a “Gigantic” Coaxial Line Filled with Magnetized Plasma Open
A propagation of ultrawideband electromagnetic pulses (UWB EMPs) through magnetized plasma has been experimentally studied using a “gigantic” coaxial line, which has been developed at IAP RAS for laboratory modeling of ionospheric effects.…
View article: Features of the Dynamic Spectrum of Signals Generated by a Wide-Aperture Electron Beam in a Large-Scale Magnetized Plasma
Features of the Dynamic Spectrum of Signals Generated by a Wide-Aperture Electron Beam in a Large-Scale Magnetized Plasma Open
Electromagnetic signals generated by a wide-aperture electron beam in the laboratory plasma under conditions limitedly modeling the interaction between waves and particles in the near-Earth plasma have been studied at the large-scale Krot …
View article: Dynamics of a Plasma Cloud Generated by a Compact Coaxial Gun upon Expansion into Vacuum and Large-Volume Background Plasma in an External Magnetic Field
Dynamics of a Plasma Cloud Generated by a Compact Coaxial Gun upon Expansion into Vacuum and Large-Volume Background Plasma in an External Magnetic Field Open
Results of experiments on injection of dense plasma clouds created by a small-scale coaxial generator into vacuum and large-volume background plasma in an ambient magnetic field are presented. The regime of an “infinite” background medium …
View article: Microwave Cavity Sensor for Measurements of Air Humidity under Reduced Pressure
Microwave Cavity Sensor for Measurements of Air Humidity under Reduced Pressure Open
A high-sensitivity sensor for measuring moisture content in the air or air humidity under low pressure was designed on the basis of a half-wave coaxial microwave cavity. The method of measuring small variations in the signal phase at a cav…
View article: Amplitude–Temporal and Spectral Characteristics of Pulsed UHF-SHF Radiation of a High-Voltage Streamer Discharge in Air under the Atmospheric Pressure
Amplitude–Temporal and Spectral Characteristics of Pulsed UHF-SHF Radiation of a High-Voltage Streamer Discharge in Air under the Atmospheric Pressure Open
A special experimental setup with a three-electrode discharge gap was used to study the dynamic characteristics of the ultra-high- and super-high-frequency (UHF-SHF) electromagnetic radiation of a high-voltage discharge having the streamer…
View article: Features of Turbulence Excited by Pulsed High-Frequency Pump in a Magnetoplasma
Features of Turbulence Excited by Pulsed High-Frequency Pump in a Magnetoplasma Open
Turbulence developed in a magnetoplasma modified by a high-power high-frequency pulse fed to a loop antenna is discovered and studied on the large-scale KROT plasma device. Turbulence is manifested in the excitation of the electron density…
View article: Stand for research of radio emission of a long electric spark
Stand for research of radio emission of a long electric spark Open
On the created stand, in laboratory conditions, various phases of discharge development characteristic of lightning were simulated using an electric spark in a long air gap. With the help of special radio equipment, the radio emission of a…
View article: Gigantic Coaxial Line for Experimental Studies of the Interaction of Nanosecond Electromagnetic Pulses with an Ionized Gas Medium
Gigantic Coaxial Line for Experimental Studies of the Interaction of Nanosecond Electromagnetic Pulses with an Ionized Gas Medium Open
A large-scale coaxial line filled with the plasma of RF discharge has been developed for laboratory modeling of the effects of the interaction of ultrashort electromagnetic pulses (EMPs) with the atmosphere and the ionosphere in the KROT f…
View article: Pulsed magnetic field generation system for laser-plasma research
Pulsed magnetic field generation system for laser-plasma research Open
An up to 15 T pulsed magnetic field generator in a volume of a few cubic centimeters has been developed for experiments with magnetized laser plasma. The magnetic field is created by a pair of coils placed in a sealed reservoir with liquid…
View article: Inferring possible magnetic field strength of accreting inflows in EXor-type objects from scaled laboratory experiments
Inferring possible magnetic field strength of accreting inflows in EXor-type objects from scaled laboratory experiments Open
Aims. EXor-type objects are protostars that display powerful UV-optical outbursts caused by intermittent and powerful events of magnetospheric accretion. These objects are not yet well investigated and are quite difficult to characterize. …
View article: MEASUREMENTS OF THE NATURAL ELECTROMAGNETIC BACKGROUND AT KAMCHATKA: ABOUT THE POSSIBILITY OF REGISTRATION OF GEOMAGNETIC DISTURBANCES FROM SUCH A DANGEROUS EVENT AS TSUNAMI
MEASUREMENTS OF THE NATURAL ELECTROMAGNETIC BACKGROUND AT KAMCHATKA: ABOUT THE POSSIBILITY OF REGISTRATION OF GEOMAGNETIC DISTURBANCES FROM SUCH A DANGEROUS EVENT AS TSUNAMI Open
Electromagnetic fields induced by the movement of a conductive water mass in the Earth's Permanent Magnetic Field (EPMF) are used to measure currents and waves in the ocean, and can in principle be used to build tsunami early warning syste…
View article: Transformation of an ultra-wideband electromagnetic pulse in the process of its propagation through a large laboratory plasma
Transformation of an ultra-wideband electromagnetic pulse in the process of its propagation through a large laboratory plasma Open
The transformation of a subnanosecond ultrawideband electromagnetic pulse (UWB EMP) in a large-volume transparent plasma has been demonstrated experimentally using a large-scale KROT plasma device. The column of the plasma generated in the…
View article: Study of inhomogeneous structure of the ionosphere using simultaneous measurements by nanosatellites of CubeSat standard
Study of inhomogeneous structure of the ionosphere using simultaneous measurements by nanosatellites of CubeSat standard Open
Рассмотрена возможность использования группировки наноспутников стандарта CubeSat.Такой подход обеспечивает получение одновременных измерений в разнесенных точках.Это позволит лучше