Nonlinear interactions between electromagnetic electron cyclotron (EMEC) waves and ion-acoustic perturbations involving nonisothermal electrons and cold inertial ions are considered. Following standard methods, a reduced wave equation for the slowly varying EMEC wave envelope is derived, including nonlinear effects associated with relativistic electron mass variation and electron density changes caused by the EMEC ponderomotive force and trapped electrons in the ion-acoustic perturbations which modulate the EMEC waves. The governing equations are employed to investigate the influence of trapped electrons on the modulational instability and envelope EMEC solitons. It is found that the static magnetic field intensifies the reduction of the growth rate, and makes the conditions for constructing envelope soliton solutions harder.
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September 2004
Research Article|
September 01 2004
Modulation of electromagnetic electron cyclotron waves in the presence of nonisothermal electrons in plasmas
H. Abbasi;
H. Abbasi
Faculty of Physics, Amir Kabir University of Technology, P. O. Box 15875-4413, Tehran, Iran and Institute for Studies in Theoretical Physics and Mathematics, P. O. Box 19395-5531, Tehran, Iran
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H. Hakimi Pajouh;
H. Hakimi Pajouh
Institute for Studies in Theoretical Physics and Mathematics, P. O. Box 19395-5531, Tehran, Iran
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P. K. Shukla
P. K. Shukla
Faculty of Physics and Astronomy, Ruhr University Bochum, D-44780 Bochum, Germany
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Phys. Plasmas 11, 4346–4352 (2004)
Article history
Received:
March 18 2004
Accepted:
May 25 2004
Citation
H. Abbasi, H. Hakimi Pajouh, P. K. Shukla; Modulation of electromagnetic electron cyclotron waves in the presence of nonisothermal electrons in plasmas. Phys. Plasmas 1 September 2004; 11 (9): 4346–4352. https://doi.org/10.1063/1.1774165
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