scholarly journals Principles of Creation of Local Network for Lightning Discharge Observations on Active Volcanoes of Kamchatka Peninsula

2019 ◽  
Vol 127 ◽  
pp. 02021
Author(s):  
Evgeniy Malkin ◽  
Gennadiy Druzhin ◽  
Pavel Firstov ◽  
Nina Cherneva ◽  
Vladimir Uvarov ◽  
...  
Keyword(s):  
Electromagnetic Radiation ◽  
Lightning Discharge ◽  
Kamchatka Peninsula ◽  
Thunderstorm Activity ◽  
Local Network ◽  
Auxiliary Equipment ◽  
Electric Field Sensors ◽  
Radiation Sources ◽  
Recorded Data ◽  
Volcanic Lightning

To investigate the thunderstorm activity according to electromagnetic radiation recorded data, it is necessary to create a local network which will be located near the Klyuchevskaya Sopka, Shiveluch and Tolbachik volcanoes. VLF direction finders, electric field sensors, synchronization system, auxiliary equipment will be installed at observation points. Based on the analysis of waveforms and spectral-temporal characteristics, the locations of radiation sources, their belonging to a certain class will be determined. The parameters, by which volcanic lightning differs from ordinary ones, will be determined. Examples of electromagnetic radiation occurring near the Shiveluch volcano are given. The information can be further used to monitor thunderstorm and volcanic activities.**

scholarly journals Dirty thunderstorms caused by volcano explosive eruptions in Kamchatka by the data of electromagnetic radiation

2021 ◽  
Vol 946 (1) ◽  
pp. 012015
Author(s):  
E I Malkin ◽  
N V Cherneva ◽  
P P Firstov ◽  
G I Druzhin ◽  
D V Sannikov
Keyword(s):  
Electromagnetic Radiation ◽  
Kamchatka Peninsula ◽  
Thunderstorm Activity ◽  
Cloud Formation ◽  
Explosive Eruptions ◽  
Second Stage ◽  
Direction Finder ◽  
Eruptive Column ◽  
Radio Equipment ◽  
Gas Cloud

Abstract During volcano eruptions, so called dirty thunderstorms are the sources of electromagnetic radiation. They are caused by ash-gas clouds formed during explosive eruptions. Thunderstorm activity in an ash-gas cloud during volcano eruption is monitored by radio equipment. The VLF direction finder, located at Paratunka, monitors thunderstorm activity in the region of Kamchatka Peninsula including dirty thunderstorms accompanying explosive eruptions of Shiveluch and Bezymyanniy volcanoes. In the paper, we analyze records of electromagnetic radiation associated with dirty thunderstorms occurring during volcano eruptions from 2017 to 2020. During that period 24 eruptions of Shiveluch volcano and 5 eruptions of Bezymyanniy volcano occurred. Seventeen and three of them, respectively, caused dirty thunderstorms. Two-stage scenario of development is typical for all the dirty thunderstorms. The first stage lasts for 5–7 minutes and accompanies eruptive column development. However, if the eruption begins according to a smooth scenario, the first stage may be weak. The second stage lasts for 20–80 minutes and is associated with eruptive cloud formation and propagation. The intensity of this dirty thunderstorm stage depends on eruption power as well as on the interaction of an eruptive cloud during its propagation with the clouds of meteorological origin. Based on the obtained data, that is indicated by the increase of cloud-to-cloud stroke number.

Electromagnetic radiation sources based on a low-inductive extended z-discharge

2013 ◽  
Vol 58 (2) ◽  
pp. 192-199 ◽  
Author(s):  
V. A. Burtsev ◽  
V. V. Zabrodskii ◽  
N. V. Kalinin ◽  
E. P. Bol’shakov
Keyword(s):  
Electromagnetic Radiation ◽  
Radiation Sources

scholarly journals Compton Sources of Electromagnetic Radiation

2010 ◽  
Vol 03 (01) ◽  
pp. 147-163 ◽  
Author(s):  
Geoffrey A. Krafft ◽  
Gerd Priebe
Keyword(s):  
Electron Beam ◽  
Electromagnetic Radiation ◽  
Laser Light ◽  
Review Article ◽  
X Ray ◽  
Large Numbers ◽  
Radiation Sources ◽  
The World ◽  
Beam Motion ◽  
Polarized Photons

When a relativistic electron beam interacts with a high-field laser beam, intense and highly collimated electromagnetic radiation will be generated through Compton scattering. Through relativistic upshifting and the relativistic Doppler effect, highly energetic polarized photons are radiated along the electron beam motion when the electrons interact with the laser light. For example, X-ray radiation can be obtained when optical lasers are scattered from electrons of tens-of-MeV beam energy. Because of the desirable properties of the radiation produced, many groups around the world have been designing, building, and utilizing Compton sources for a wide variety of purposes. In this review article, we discuss the generation and properties of the scattered radiation, the types of Compton source devices that have been constructed to date, and the prospects of radiation sources of this general type. Due to the possibilities of producing hard electromagnetic radiation in a device that is small compared to the alternative storage ring sources, it is foreseen that large numbers of such sources may be constructed in the future.

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