Abstract
One-dimensional particle-in-cell simulations are performed to investigate the nonlinear evolution of electromagnetic instabilities excited by the electron temperature anisotropy in homogeneous plasmas with different parameters. The results show that the electron temperature anisotropy can excite the two right-hand electromagnetic instabilities, one has the frequency higher than {omega}{sub e}, the other is the whistler instability with larger amplitude, and its frequency is below {omega}{sub e}. Their dispersion relations are consistent with the prediction from the cold plasma theory. In the initial growth stage (prediction from linear theory), the frequency of the dominant mode (the mode whose amplitude is large enough) of the whistler wave almost does not change, but in the saturation stage the situation is different. In the case that the ratio of electron plasma frequency to cyclotron frequency is larger than 1, the frequency of the dominant mode of the whistler wave drifts from high to low continuously. However, for the case of the ratio smaller than 1, besides the original dominant mode of the whistler wave whose frequency is about 2.6{omega}{sub e}, another dominant mode whose frequency is about 1.55 {omega}{sub e} also begins to be excited at definite time, and its amplitude increases with time until it
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Quanming, Lu;
Lianqi, Wang;
Yan, Zhou;
Shui, Wang
[1]
- China Science and Technology Univ., Hefei (China). School of Earth and Space Sciences
Citation Formats
Quanming, Lu, Lianqi, Wang, Yan, Zhou, and Shui, Wang.
Electromagnetic instabilities excited by electron temperature anisotropy.
China: N. p.,
2004.
Web.
doi:10.1088/0256-307X/21/1/039.
Quanming, Lu, Lianqi, Wang, Yan, Zhou, & Shui, Wang.
Electromagnetic instabilities excited by electron temperature anisotropy.
China.
https://doi.org/10.1088/0256-307X/21/1/039
Quanming, Lu, Lianqi, Wang, Yan, Zhou, and Shui, Wang.
2004.
"Electromagnetic instabilities excited by electron temperature anisotropy."
China.
https://doi.org/10.1088/0256-307X/21/1/039.
@misc{etde_20619965,
title = {Electromagnetic instabilities excited by electron temperature anisotropy}
author = {Quanming, Lu, Lianqi, Wang, Yan, Zhou, and Shui, Wang}
abstractNote = {One-dimensional particle-in-cell simulations are performed to investigate the nonlinear evolution of electromagnetic instabilities excited by the electron temperature anisotropy in homogeneous plasmas with different parameters. The results show that the electron temperature anisotropy can excite the two right-hand electromagnetic instabilities, one has the frequency higher than {omega}{sub e}, the other is the whistler instability with larger amplitude, and its frequency is below {omega}{sub e}. Their dispersion relations are consistent with the prediction from the cold plasma theory. In the initial growth stage (prediction from linear theory), the frequency of the dominant mode (the mode whose amplitude is large enough) of the whistler wave almost does not change, but in the saturation stage the situation is different. In the case that the ratio of electron plasma frequency to cyclotron frequency is larger than 1, the frequency of the dominant mode of the whistler wave drifts from high to low continuously. However, for the case of the ratio smaller than 1, besides the original dominant mode of the whistler wave whose frequency is about 2.6{omega}{sub e}, another dominant mode whose frequency is about 1.55 {omega}{sub e} also begins to be excited at definite time, and its amplitude increases with time until it exceeds the original dominant mode.}
doi = {10.1088/0256-307X/21/1/039}
journal = []
issue = {1}
volume = {21}
journal type = {AC}
place = {China}
year = {2004}
month = {Jan}
}
title = {Electromagnetic instabilities excited by electron temperature anisotropy}
author = {Quanming, Lu, Lianqi, Wang, Yan, Zhou, and Shui, Wang}
abstractNote = {One-dimensional particle-in-cell simulations are performed to investigate the nonlinear evolution of electromagnetic instabilities excited by the electron temperature anisotropy in homogeneous plasmas with different parameters. The results show that the electron temperature anisotropy can excite the two right-hand electromagnetic instabilities, one has the frequency higher than {omega}{sub e}, the other is the whistler instability with larger amplitude, and its frequency is below {omega}{sub e}. Their dispersion relations are consistent with the prediction from the cold plasma theory. In the initial growth stage (prediction from linear theory), the frequency of the dominant mode (the mode whose amplitude is large enough) of the whistler wave almost does not change, but in the saturation stage the situation is different. In the case that the ratio of electron plasma frequency to cyclotron frequency is larger than 1, the frequency of the dominant mode of the whistler wave drifts from high to low continuously. However, for the case of the ratio smaller than 1, besides the original dominant mode of the whistler wave whose frequency is about 2.6{omega}{sub e}, another dominant mode whose frequency is about 1.55 {omega}{sub e} also begins to be excited at definite time, and its amplitude increases with time until it exceeds the original dominant mode.}
doi = {10.1088/0256-307X/21/1/039}
journal = []
issue = {1}
volume = {21}
journal type = {AC}
place = {China}
year = {2004}
month = {Jan}
}