Parametric Instabilities of Parallel Propagating Circularly Polarized Alfvén Waves: One-Dimensional Hybrid Simulations
HE Peng1 , GAO Xin-Liang1** , LU Quan-Ming1 , ZHAO Jin-Song2
1 CAS Key Laboratory of Geospace Environment, Department of Geophysics and Planetary Science, University of Science and Technology of China, Hefei 2300262 Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008
Abstract ：By performing one-dimensional (1-D) hybrid simulations, we analyze in detail the parametric instabilities of the Alfvén waves with a spectrum in a low beta plasma. The parametric instabilities experience two stages. In the first stage, the density modes are excited and immediately couple with the pump Alfvén waves. In the second stage, each pump Alfvén wave decays into a density mode and a daughter Alfvén mode similar to the monochromatic cases. Furthermore, the proton velocity beam will also be formed after the saturation of the parametric instabilities. When the plasma beta is high, the parametric decay in the second stage will be strongly suppressed.
收稿日期: 2015-07-10
出版日期: 2015-12-01
:
52.35.Mw
(Nonlinear phenomena: waves, wave propagation, and other interactions (including parametric effects, mode coupling, ponderomotive effects, etc.))
94.05.Pt
(Wave/wave, wave/particle interactions)
52.65.Ww
(Hybrid methods)
[1] Barnes A and Hollweg J V 1974 J. Geophys. Res. 79 2302 1974 J. Geophys. Res. 79 1539 1955 Proc. R. Soc. London A 223 310 2005 Mon. Not. R. Astron. Soc. 359 L27–L29 Sov. Phys. Dokl. 7 998Nonlinear Plasma Theory (New York: Benjamin)1978 Astrophys. J. 219 700 1978 Astrophys. J. 224 1013 1979 Plasma Phys. 21 735 2004 J. Plasma Phys. 70 143 1983 J. Geophys. Res. 88 9069 1986 J. Geophys. Res. 91 6816 1986 J. Geophys. Res. 91 5617 1986 J. Geophys. Res. 91 4171 1989 Phys. Fluids B 1 1405 1993 J. Geophys. Res. 98 19049 1993 J. Geophys. Res. 98 3491 1994 J. Geophys. Res. 99 23431 1998 Phys. Scr. T75 164 2001 Astron. Astrophys. 367 705 2007 J. Geophys. Res. 112 A04104 2014 Astrophys. J. 785 139 2015 Astrophys. J. 799 222 1991 J. Plasma Phys. 46 129 2007 J. Geophys. Res. 112 A10107 2007 Phys. Plasmas 14 122110 2008 Phys. Plasmas 15 062106 2010 Geophys. Res. Lett. 37 L20101 2012 Phys. Rev. E 86 027401 2013 Phys. Plasmas 20 072902 2014 Astrophys. J. 793 138 2013 Living Rev. Sol. Phys. 10 2 1995 Space Sci. Rev. 73 1 2006 Phys. Rev. Lett. 97 191101 2013 Phys. Plasmas 20 022305 2015 Philos. Trans. R. Soc. A 373 20140145 2010 J. Geophys. Res. 115 A09106 1985 Space Sci. Rev. 42 53 1988 J. Geophys. Res. 93 9649 Computer Space Plasma Physics: Simulation Techniques and Software (Tokyo: Terra Science Publishers)
[1]
.
[2]
.
[3]
.
[4]
.
[5]
.
[6]
.
[7]
.
[8]
.
[9]
.
[10]
.
[11]
.
[12]
.
[13]
.
[14]
.
[15]
.
2015, Vol. 32 
