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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Influence of electron nongyrotropy and anisotropy on parallel wave propagation: Numerical solution of dispersion relation

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Author(s):
Simoes, Jr., F. J. R. [1] ; Alves, M. V. [2] ; Cardoso, F. R. [2] ; Costa, Jr., E. [2]
Total Authors: 4
Affiliation:
[1] Univ Fed Pelotas UFPel, Dept Fis, IFM, BR-96010900 Pelotas, RS - Brazil
[2] Natl Inst Space Res INPE, Associated Plasma Lab LAP, BR-12227010 Sao Jose Dos Campos, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS; v. 73, n. 11-12, SI, p. 1511-1519, JUL 2011.
Web of Science Citations: 2
Abstract

This work investigates the influence of a nongyrotropic electron beam on the coupling between the electromagnetic modes of parallel propagation in a background gyrotropic plasma. We explore the importance of the relevant parameters in driving instabilities: the ratio of electron plasma frequency to electron cyclotron frequency, the gyrophase angle, and the temperature anisotropy. We confirm previous results that nongyrotropy can lead to mode coupling for specific values of relevant parameters. More important was to observe that when the anisotropy in the system provides sufficient free energy to start instabilities, the electron nongyrotropy plays an important role to change the growth rate. (C) 2010 Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 08/01288-0 - Numerical simulations on electromagnetic emissions driven by multiple electon beams associated to potential geoeffective solar phenomena
Grantee:Fernando Jaques Ruiz Simões Junior
Support type: Scholarships in Brazil - Post-Doctorate