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Pitch-Angle Diffusion of Radiation Belt Electrons and Precipitating Particle Fluxes: Dependence on VLF Wavefield Parameters.

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Title: Pitch-Angle Diffusion of Radiation Belt Electrons and Precipitating Particle Fluxes: Dependence on VLF Wavefield Parameters.
Authors: Demekhov, A. G.1 (AUTHOR) andrei@ipfran.ru
Source: Geomagnetism & Aeronomy. Apr2024, Vol. 64 Issue 2, p264-271. 8p.
Subject Terms: *RADIATION trapping, *RADIATION belts, *ELECTRONS, *GEOMAGNETISM, *DIFFUSION coefficients, *ELECTRON diffusion
Abstract: The dependence of the pitch-angle diffusion efficiency of energetic electrons in the Earth's magnetosphere on the distribution of the whistler wave field along the geomagnetic flux tube is quantitatively studied for parameters corresponding to the location of the Sura and HAARP HF heating facilities. The expansion of the precipitation energy range with the increase of the region of geomagnetic latitudes occupied by the waves is shown. Using the calculated pitch-angle diffusion coefficient for a given spectrum of waves and their distribution along the flux tube, the ratio of the fluxes of precipitating and trapped particles at low altitude is determined. It is shown that at typical wave intensities corresponding to chorus VLF waves and plasmaspheric hiss, the fluxes of precipitating and trapped electrons can be comparable to each other. At the same time, for the wave amplitudes observed as a result of the action of heating facilities, the flux of precipitating electrons is negligible. [ABSTRACT FROM AUTHOR]
Copyright of Geomagnetism & Aeronomy is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Pitch-Angle Diffusion of Radiation Belt Electrons and Precipitating Particle Fluxes: Dependence on VLF Wavefield Parameters.
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  Data: <searchLink fieldCode="JN" term="%22Geomagnetism+%26+Aeronomy%22">Geomagnetism & Aeronomy</searchLink>. Apr2024, Vol. 64 Issue 2, p264-271. 8p.
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  Data: *<searchLink fieldCode="DE" term="%22RADIATION+trapping%22">RADIATION trapping</searchLink><br />*<searchLink fieldCode="DE" term="%22RADIATION+belts%22">RADIATION belts</searchLink><br />*<searchLink fieldCode="DE" term="%22ELECTRONS%22">ELECTRONS</searchLink><br />*<searchLink fieldCode="DE" term="%22GEOMAGNETISM%22">GEOMAGNETISM</searchLink><br />*<searchLink fieldCode="DE" term="%22DIFFUSION+coefficients%22">DIFFUSION coefficients</searchLink><br />*<searchLink fieldCode="DE" term="%22ELECTRON+diffusion%22">ELECTRON diffusion</searchLink>
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  Data: The dependence of the pitch-angle diffusion efficiency of energetic electrons in the Earth's magnetosphere on the distribution of the whistler wave field along the geomagnetic flux tube is quantitatively studied for parameters corresponding to the location of the Sura and HAARP HF heating facilities. The expansion of the precipitation energy range with the increase of the region of geomagnetic latitudes occupied by the waves is shown. Using the calculated pitch-angle diffusion coefficient for a given spectrum of waves and their distribution along the flux tube, the ratio of the fluxes of precipitating and trapped particles at low altitude is determined. It is shown that at typical wave intensities corresponding to chorus VLF waves and plasmaspheric hiss, the fluxes of precipitating and trapped electrons can be comparable to each other. At the same time, for the wave amplitudes observed as a result of the action of heating facilities, the flux of precipitating electrons is negligible. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Geomagnetism & Aeronomy is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1134/S0016793223601114
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      – Code: eng
        Text: English
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        PageCount: 8
        StartPage: 264
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      – SubjectFull: RADIATION trapping
        Type: general
      – SubjectFull: RADIATION belts
        Type: general
      – SubjectFull: ELECTRONS
        Type: general
      – SubjectFull: GEOMAGNETISM
        Type: general
      – SubjectFull: DIFFUSION coefficients
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      – SubjectFull: ELECTRON diffusion
        Type: general
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      – TitleFull: Pitch-Angle Diffusion of Radiation Belt Electrons and Precipitating Particle Fluxes: Dependence on VLF Wavefield Parameters.
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              Text: Apr2024
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              Y: 2024
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