Abstract—

Model calculations of the charge exchange efficiency for solar wind protons colliding with hydrogen atoms of the extensive Martian corona are presented. It is shown that the energy spectrum of hydrogen atoms penetrating in the Martian atmosphere is identical to the spectrum of protons of the unperturbed solar wind. The charge exchange efficiency varies from 2 to 4% depending on the boundary location of the Martian induced magnetosphere. The presented calculations, combined with the kinetic model of proton precipitation proposed earlier, enable us to follow all proton penetration stages of the unperturbed solar wind into denser atmospheric layers and to estimate the characteristics of proton aurorae observed on the Mars.

中文翻译：

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扩展火星氢电晕中太阳风质子电荷交换效率的动力学计算

摘要-

提出了与大火星电晕的氢原子碰撞的太阳风质子的电荷交换效率的模型计算。结果表明，在火星大气中渗透的氢原子的能谱与不受干扰的太阳风的质子谱相同。根据火星感应磁层的边界位置，电荷交换效率在2-4％之间变化。提出的计算，结合较早提出的质子沉淀动力学模型，使我们能够追踪未受扰动的太阳风的所有质子渗透阶段，进入较稠密的大气层，并估计在火星上观测到的质子极光的特征。