太阳风质子的波能串级-回旋共振加热机制的初级模型

空间飞船Helios 1和2的观测表明, 由0.3AU, 至1AU, 质子的磁矩T_p⊥/B随日心距离增加而增加, 而纵向绝热不变量T_p∥B2/N_P2则随日心距离增加而下降。这说明质子在垂直于行星际磁场方向上受到加热, 而在平行磁场的方向上受到冷却。以往没有理论能满意地解释上述现象, 本文在Alfvén脉动串级理论的基础上利用回旋波的准线性理论分析研究了串级能量转化为太阳风质子热能的机制, 解释了上述观测事实。 

THE HEATING OF SOLAR WIND PROTONS THROUGH ENERGY CASCADE OF ALFVENIC FLUCTUATIONS

The observations by Helios 1 and 2 spacecrafts showed that with increasing hiliocentric distance the proton magnetic moment and the proton's second invariant decreases. This phenomena indicates that some heating is required for the proton perpendicular temperature while some cooling process is required for the proton parallel temperature. No theory which is consistent with observations has been pubished to explain the phenomena. Based on Alfvenic fluctuation's model of Tu 1988 and the quasi-linear theory of proton-cyclotron resonance, a model which can describe the inversion of the energy cascade of Alfvenic flucturations to the heat of protons and the inversion of the parallel energy to the perpendicular energy is developed. This model can explain the perpendicular heating and parallel cooling of the protons in the solar wind.