Characteristic energy range of electron scattering due to plasmaspheric hiss
Abstract
In this paper, we investigate the characteristic energy range of electron flux decay due to the interaction with plasmaspheric hiss in the Earth's inner magnetosphere. The Van Allen Probes have measured the energetic electron flux decay profiles in the Earth's outer radiation belt during a quiet period following the geomagnetic storm that occurred on 7 November 2015. The observed energy of significant electron decay increases with decreasing L shell and is well correlated with the energy band corresponding to the first adiabatic invariant μ = 4–200 MeV/G. The electron diffusion coefficients due to hiss scattering are calculated at L = 2–6, and the modeled energy band of effective pitch angle scattering is also well correlated with the constant μ lines and is consistent with the observed energy range of electron decay. Using the previously developed statistical plasmaspheric hiss model during modestly disturbed periods, we perform a 2-D Fokker-Planck simulation of the electron phase space density evolution at L = 3.5 and demonstrate that plasmaspheric hiss causes the significant decay of 100 keV–1 MeV electrons with the largest decay rate occurring at around 340 keV, forming anisotropic pitch angle distributions at lower energies and more flattened distributions at higher energies. Finally,more »
- Authors:
-
- Univ. of California, Los Angeles, CA (United States). Dept. of Atmospheric and Oceanic Sciences
- Univ. of California, Los Angeles, CA (United States). Dept. of Atmospheric and Oceanic Sciences; Boston Univ., MA (United States). Center for Space Physics
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Univ. of Iowa, Iowa City, IA (United States). Dept. of Physics and Astronomy
- Univ. of New Hampshire, Durham, NH (United States). Inst. for the Study of Earth, Oceans, and Space
- Univ. of Colorado, Boulder, CO (United States). Lab. for Atmospheric and Space Physics
- The Aerospace Corporation, Los Angeles, CA (United States). Space Sciences Dept.
- Univ. of California, Los Angeles, CA (United States). Dept. of Earth, Planetary and Space Sciences. Inst. of Geophysics and Planetary Physics
- Publication Date:
- Research Org.:
- Univ. of California, Los Angeles, CA (United States); The Aerospace Corporation, Los Angeles, CA (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Fusion Energy Sciences (FES); National Aeronautics and Space Administration (NASA); National Science Foundation (NSF); US Air Force Office of Scientific Research (AFOSR)
- OSTI Identifier:
- 1402625
- Report Number(s):
- LA-UR-17-20875
Journal ID: ISSN 2169-9380; TRN: US1703014
- Grant/Contract Number:
- AC52-06NA25396; SC0010578; NAS5-01072; NNX15AI96G; NNX15AF61G; NNX14AN85G; NNX13AI61G; NNX14AI18G; 967399; 921647; AGS 1405054; 1564510; FA9550-15-1-0158
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Geophysical Research. Space Physics
- Additional Journal Information:
- Journal Volume: 121; Journal Issue: 12; Journal ID: ISSN 2169-9380
- Publisher:
- American Geophysical Union
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS; plasmaspheric hiss; electron flux decay; pitch angle scattering; Van Allen Probes observation
Citation Formats
Ma, Q., Li, W., Thorne, R. M., Bortnik, J., Reeves, G. D., Kletzing, C. A., Kurth, W. S., Hospodarsky, G. B., Spence, H. E., Baker, D. N., Blake, J. B., Fennell, J. F., Claudepierre, S. G., and Angelopoulos, V. Characteristic energy range of electron scattering due to plasmaspheric hiss. United States: N. p., 2016.
Web. doi:10.1002/2016JA023311.
Ma, Q., Li, W., Thorne, R. M., Bortnik, J., Reeves, G. D., Kletzing, C. A., Kurth, W. S., Hospodarsky, G. B., Spence, H. E., Baker, D. N., Blake, J. B., Fennell, J. F., Claudepierre, S. G., & Angelopoulos, V. Characteristic energy range of electron scattering due to plasmaspheric hiss. United States. https://doi.org/10.1002/2016JA023311
Ma, Q., Li, W., Thorne, R. M., Bortnik, J., Reeves, G. D., Kletzing, C. A., Kurth, W. S., Hospodarsky, G. B., Spence, H. E., Baker, D. N., Blake, J. B., Fennell, J. F., Claudepierre, S. G., and Angelopoulos, V. Tue .
"Characteristic energy range of electron scattering due to plasmaspheric hiss". United States. https://doi.org/10.1002/2016JA023311. https://www.osti.gov/servlets/purl/1402625.
@article{osti_1402625,
title = {Characteristic energy range of electron scattering due to plasmaspheric hiss},
author = {Ma, Q. and Li, W. and Thorne, R. M. and Bortnik, J. and Reeves, G. D. and Kletzing, C. A. and Kurth, W. S. and Hospodarsky, G. B. and Spence, H. E. and Baker, D. N. and Blake, J. B. and Fennell, J. F. and Claudepierre, S. G. and Angelopoulos, V.},
abstractNote = {In this paper, we investigate the characteristic energy range of electron flux decay due to the interaction with plasmaspheric hiss in the Earth's inner magnetosphere. The Van Allen Probes have measured the energetic electron flux decay profiles in the Earth's outer radiation belt during a quiet period following the geomagnetic storm that occurred on 7 November 2015. The observed energy of significant electron decay increases with decreasing L shell and is well correlated with the energy band corresponding to the first adiabatic invariant μ = 4–200 MeV/G. The electron diffusion coefficients due to hiss scattering are calculated at L = 2–6, and the modeled energy band of effective pitch angle scattering is also well correlated with the constant μ lines and is consistent with the observed energy range of electron decay. Using the previously developed statistical plasmaspheric hiss model during modestly disturbed periods, we perform a 2-D Fokker-Planck simulation of the electron phase space density evolution at L = 3.5 and demonstrate that plasmaspheric hiss causes the significant decay of 100 keV–1 MeV electrons with the largest decay rate occurring at around 340 keV, forming anisotropic pitch angle distributions at lower energies and more flattened distributions at higher energies. Finally, our study provides reasonable estimates of the electron populations that can be most significantly affected by plasmaspheric hiss and the consequent electron decay profiles.},
doi = {10.1002/2016JA023311},
journal = {Journal of Geophysical Research. Space Physics},
number = 12,
volume = 121,
place = {United States},
year = {Tue Nov 15 00:00:00 EST 2016},
month = {Tue Nov 15 00:00:00 EST 2016}
}
Web of Science
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Works referencing / citing this record:
Statistical Analysis on Plasmatrough Exohiss Waves From the Van Allen Probes
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