THE EVOLUTION OF NONLINEAR KINETIC ALFVEN WAVES
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摘要: 本文讨论了非线性动力Alfven波在1>>β>>me/mi条件下形成孤子解的限制条件,表明只有亚Alfven速度才能形成压缩型孤子.由动力Alfven波孤子和湍流产生的极大纵向电子速度不会超过本底电子热速度,但由此产生的纵向电场在小尺度范围可以很强,这可能对太阳风的能量传输与粒子加速产生一定影响.Abstract: Some restriction conditions of soliton solution for a nonlinear kinetic Alfven wave in the case of me/ mi<< β<< 1 have been discussed in detail. It is found that a compressive soliton can form only in the subAlfven velocity. The maximum parallel electron velocity, induced from kinetic Alfven soliton and turbulenee cannot exceed the thermal velocity of background electrons, but its maximum parallel electric field mny rather strong in the small scale region. It will produce a certain influence for energy transfering and particle acceleration in the solar wind'
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Key words:
- Alfven waves /
- Nonlinear processes /
- Solar wind
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