skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: A Full-wave Model for Wave Propagation and Dissipation in the Inner Magnetosphere Using the Finite Element Method

Abstract

A wide variety of plasma waves play an important role in the energization and loss of particles in the inner magnetosphere. Our ability to understand and model wave-particle interactions in this region requires improved knowledge of the spatial distribution and properties of these waves as well as improved understanding of how the waves depend on changes in solar wind forcing and/or geomagnetic activity. To this end, we have developed a two-dimensional, finite element code that solves the full wave equations in global magnetospheric geometry. The code describes three-dimensional wave structure including mode conversion when ULF, EMIC, and whistler waves are launched in a two-dimensional axisymmetric background plasma with general magnetic field topology. We illustrate the capabilities of the code by examining the role of plasmaspheric plumes on magnetosonic wave propagation; mode conversion at the ion-ion and Alfven resonances resulting from external, solar wind compressions; and wave structure and mode conversion of electromagnetic ion cyclotron waves launched in the equatorial magnetosphere, which propagate along the magnetic field lines toward the ionosphere. We also discuss advantages of the finite element method for resolving resonant structures, and how the model may be adapted to include nonlocal kinetic effects.

Authors:
Publication Date:
Research Org.:
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1036305
Report Number(s):
PPPL-4743
TRN: US1201356
DOE Contract Number:  
DE-ACO2-09CH22466
Resource Type:
Conference
Journal Name:
2011 AGU Fall meeting/San Francisco, CA 12/6/11
Additional Journal Information:
Conference: 2011 AGU Fall meeting/San Francisco, CA 12/6/11
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CYCLOTRONS; FINITE ELEMENT METHOD; GEOMETRY; IONOSPHERE; KINETICS; MAGNETIC FIELDS; MAGNETOACOUSTIC WAVES; MODE CONVERSION; PLASMA; PLASMA WAVES; PLUMES; SOLAR WIND; SPATIAL DISTRIBUTION; TOPOLOGY; WAVE EQUATIONS; WAVE PROPAGATION; WHISTLERS; Space Plasma Physics, Mode Coupling, Mode Conversion

Citation Formats

Ernest Valeo, Jay R. Johnson, Eun-Hwa and Cynthia Phillips. A Full-wave Model for Wave Propagation and Dissipation in the Inner Magnetosphere Using the Finite Element Method. United States: N. p., 2012. Web.
Ernest Valeo, Jay R. Johnson, Eun-Hwa and Cynthia Phillips. A Full-wave Model for Wave Propagation and Dissipation in the Inner Magnetosphere Using the Finite Element Method. United States.
Ernest Valeo, Jay R. Johnson, Eun-Hwa and Cynthia Phillips. Tue . "A Full-wave Model for Wave Propagation and Dissipation in the Inner Magnetosphere Using the Finite Element Method". United States. https://www.osti.gov/servlets/purl/1036305.
@article{osti_1036305,
title = {A Full-wave Model for Wave Propagation and Dissipation in the Inner Magnetosphere Using the Finite Element Method},
author = {Ernest Valeo, Jay R. Johnson, Eun-Hwa and Cynthia Phillips},
abstractNote = {A wide variety of plasma waves play an important role in the energization and loss of particles in the inner magnetosphere. Our ability to understand and model wave-particle interactions in this region requires improved knowledge of the spatial distribution and properties of these waves as well as improved understanding of how the waves depend on changes in solar wind forcing and/or geomagnetic activity. To this end, we have developed a two-dimensional, finite element code that solves the full wave equations in global magnetospheric geometry. The code describes three-dimensional wave structure including mode conversion when ULF, EMIC, and whistler waves are launched in a two-dimensional axisymmetric background plasma with general magnetic field topology. We illustrate the capabilities of the code by examining the role of plasmaspheric plumes on magnetosonic wave propagation; mode conversion at the ion-ion and Alfven resonances resulting from external, solar wind compressions; and wave structure and mode conversion of electromagnetic ion cyclotron waves launched in the equatorial magnetosphere, which propagate along the magnetic field lines toward the ionosphere. We also discuss advantages of the finite element method for resolving resonant structures, and how the model may be adapted to include nonlocal kinetic effects.},
doi = {},
journal = {2011 AGU Fall meeting/San Francisco, CA 12/6/11},
number = ,
volume = ,
place = {United States},
year = {2012},
month = {3}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share: