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Parametric instability of a monochromatic Alfven wave: Perpendicular decay in low beta plasma
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10.1063/1.4816703
/content/aip/journal/pop/20/7/10.1063/1.4816703
http://aip.metastore.ingenta.com/content/aip/journal/pop/20/7/10.1063/1.4816703

Figures

Image of FIG. 1.
FIG. 1.

Time evolution of (a) the density fluctuations and (b) the wave energy of backward propagating Alfven waves (solid line), and the associated cross-helicity (dashed line) for run 1.

Image of FIG. 2.
FIG. 2.

The contour of characteristics of the diagram obtained from the FFT transforming of and at , 1500, and 2900 for run 1. , , and denote the wave number of the pump Alfven wave, the daughter density mode, and the daughter Alfven wave, respectively.

Image of FIG. 3.
FIG. 3.

The 2-D contour plots of the fluctuating density and magnetic field component at for run 1. Here, the fluctuating magnetic field of pump wave has been removed.

Image of FIG. 4.
FIG. 4.

(a) Time evolution of the density fluctuations , the spectra of (b) the density fluctuations and (c) the magnetic field fluctuations versus at , 1800, and 1200 for runs 1 (black lines), 2 (blue lines), and 3 (red lines).

Image of FIG. 5.
FIG. 5.

(a) Time evolution of the density fluctuations , the spectra of (b) the density fluctuations and (c) the magnetic field fluctuations versus at 1200, 1300, and 2200 for runs 3 (red lines), 4 (blue lines) and 5 (black lines).

Image of FIG. 6.
FIG. 6.

The contour of characteristics of the diagram obtained from the FFT transforming of and at , 700, and 1200 for run 7. , , and denote the wave number of the pump Alfven wave, the daughter density mode, and the daughter Alfven wave, respectively. The black lines represent the frame.

Image of FIG. 7.
FIG. 7.

(a) Time evolution of the density fluctuations , the spectra of (b) the density fluctuations and (c) the magnetic field fluctuations versus at 1800, 1500, and 1100 for runs 2 (red lines), 6 (blue lines), and 7 (black lines).

Image of FIG. 8.
FIG. 8.

Time evolution of (a) the density fluctuations and (b) the wave energy of backward propagating Alfven waves (solid line), and the associated cross-helicity (dashed line) for run 8.

Image of FIG. 9.
FIG. 9.

The contour of characteristics of the diagram obtained from the FFT transforming of and at , 400, and 1000 for run 8. , , and denote the wave number of the pump Alfven wave, the daughter density mode, and the daughter Alfven wave, respectively.

Image of FIG. 10.
FIG. 10.

The contour of characteristics of the diagram obtained from the FFT transforming of and at , 600, and 1200 for run 9. , , and denote the wave number of the pump Alfven wave, the daughter density mode, and the daughter Alfven wave, respectively. The black lines represent the frame.

Tables

Generic image for table
Table I.

The simulation parameters for Run 1–9.

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/content/aip/journal/pop/20/7/10.1063/1.4816703
2013-07-29
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Parametric instability of a monochromatic Alfven wave: Perpendicular decay in low beta plasma
http://aip.metastore.ingenta.com/content/aip/journal/pop/20/7/10.1063/1.4816703
10.1063/1.4816703
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