Study of Backward-Propagating Langmuir Waves with Numerical Simulations Based on the Particle-in-Cell Method

Huang Yu; Huang Guangli

Astronomical Research and Technology > 2012 > 9(4): 353-356.

Huang Yu, Huang Guangli. Study of Backward-Propagating Langmuir Waves with Numerical Simulations Based on the Particle-in-Cell Method[J]. Astronomical Research and Technology, 2012, 9(4): 353-356.

Citation:

Huang Yu, Huang Guangli. Study of Backward-Propagating Langmuir Waves with Numerical Simulations Based on the Particle-in-Cell Method[J]. Astronomical Research and Technology, 2012, 9(4): 353-356.

Citation:

Huang Yu, Huang Guangli. Study of Backward-Propagating Langmuir Waves with Numerical Simulations Based on the Particle-in-Cell Method[J]. Astronomical Research and Technology, 2012, 9(4): 353-356.

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Study of Backward-Propagating Langmuir Waves with Numerical Simulations Based on the Particle-in-Cell Method

Huang Yu^1,2,
Huang Guangli¹

1.
Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, China
2.
Graduate University of the Chinese Academy of Sciences, Beijing 100049, China

More Information

Received Date: November 20, 2011
Revised Date: November 30, 2011
Published Date: October 14, 2012

Graphical Abstract

Abstract

Abstract

The conversion of Langmuir waves into electromagnetic radiations is an important mechanism of Type III solar bursts. Langmuir Waves (LW) can be easily excited by electron-beam instabilities, and they can become backward propagating throuth the wave-wave interaction. Generally, the backward-propagating LW are very important for the second-harmonic waves of Type III solar bursts. In this paper we pay particular attention to the mechanism of the backward-propagating LW as revealed through numerical simulations based on the Partical-in-Cell (PIC) method. We found that ions play a key role to excite the backward-propagating LW, with draw much of their energy from the scattering of the forward-propagating LW. Moreover, an electron beam can hardly generate backward-propagating LW directly, but may directly amplify second-harmonic forward-propagating LW.
- Langmuir wave,
- Simulation with PIC,
- Backward propagating,
- Type III bursts

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References (10)

References

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