Science in China Series A: Mathematics

, Volume 45, Issue 3, pp 385–393 | Cite as

On capture and acceleration of heavy ions (α-particle) in high-speed solar wind

  • Liting Song
  • Chijie Xiao


The α-particles and other heavy ions, as well as a few protons are observed to be faster than the main part of protons by about the local Alfven speed in the high-speed solar wind. It is suggested that when the velocity of the solar wind is equal to the local Alfven velocity, another low-frequency kinetic Alfven wave will be excitated, and trap all the α-particles and a few protons, so these ions have a local Alfven velocity faster than the other parts of the solar wind. The undamping kinetic Alfven waves change into low-frequency Alfven solitons in the solar wind. This model can explain the observation and give the conditions of wave excitated and ions trapped.


high-speed solar wind kinetic Alfven wave Alfven point Alfven-soliton 


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Copyright information

© Science in China Press 2002

Authors and Affiliations

  • Liting Song
    • 1
    • 2
  • Chijie Xiao
    • 2
  1. 1.Space Weather LaboratoryChinese Academy of SciencesBeijingChina
  2. 2.Department of GeophysicsPeking UniversityBeijingChina

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