Evolution of plasma turbulence excited with particle beams
Evolution of plasma turbulence excited with particle beams
复制标题
粒子束激发等离子体湍流的演化
DOI:
10.1051/0004-6361/201219579
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发表时间:
2012
期刊:
影响因子:
--
通讯作者:
Spanier
中科院分区:
文献类型:
--
作者:
Lange ;Spanier
Particles ejected from the Sun that stream through the surrounding plasma of the solar wind are causing instabilities. These generate wavemodes in a certain frequency range especially within shock regions, where particles are accelerated. The aim of this paper is to investigate of amplified Alfvénic wavemodes in driven incompressible magnetohydrodynamic turbulence. Results of different heliospheric scenarios from isotropic and anisotropic plasmas, as well as turbulence near thecritical balanceare shown. The energy transport of the amplified wavemode is governed by the mechanisms of diffusion, convection and dissipation of energy in wavenumber space. The strength of these effects varies with energy and wavenumber of the mode in question. Two-dimensional energy spectra of sphericalk-space integration that permit detailed insight into thek∥/k⊥-development are presented. The evolution of energy injected through driving shows a strong energy transfer to perpendicular wavemodes. The main process at parallel wavemodes is the dissipation of energy in wavenumber space. The generation of higher harmonics along thek∥axis is observed. We find evidence for a critical balance in our simulations.
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影响因子:
6.5
作者:
R. Vainio
通讯作者:
R. Vainio
DOI:
--
发表时间:
2007
期刊:
影响因子:
--
作者:
B. Bigot;S. Galtier;H. Politano
通讯作者:
H. Politano
DOI:
--
发表时间:
1997
期刊:
影响因子:
--
作者:
V. Galinsky;V. Shevchenko;S. Ride;M. Baine
通讯作者:
M. Baine
DOI:
--
发表时间:
2002
期刊:
Physical review. E, Statistical, nonlinear, and soft matter physics
影响因子:
--
作者:
A. Bershadskii
通讯作者:
A. Bershadskii