摘要
在高速太阳风中,Alfven波在传播过程中其能量可能转移给快磁声波,当磁场强度和Alfven波速度趋于零时,快磁声波将转变为离子声波.当离子声波的相速度略大于质子的热速度时,离子声波的湍动能量将被质子大量地吸收,通过对质子的随机湍动加热,而导致高速太阳风中质子的平均温度高于电子的平均温度.
During a propagating process of Alfven waves in high-speed solar wind,Alfvenwave energy can be transferred into fast magnetosonic waves.When both magnetic field andalfven wave velocity approach zero,fast magnetosonic waves will be transferred into ion-acoustic waves.As the phase velocity of ion-- acoustic waves is slightly greater than the thermalvelocity of protons,the turbulence energy of ion- acoustic waves can largely be absorbed byprotons. Thus the mean temperature of protons ingeater than one of electrons by stochastieturbulence heating of ion-acoustic waves for protons.
出处
《北京师范大学学报(自然科学版)》
CAS
CSCD
北大核心
1999年第1期42-45,共4页
Journal of Beijing Normal University(Natural Science)
基金
国家自然科学基金
关键词
高速太阳风
离子声波
太阳风
质子
随机湍动加热
high--speed solar wind
ion--acoustic waves
stochastic turbulence heating forprotons