Acceleration of heavy ions on auroral field lines

M. Ashour‐Abdalla, H. Okuda, Chio-Zong Cheng

研究成果: Article同行評審

40 引文 斯高帕斯(Scopus)

摘要

We present results of both a linear and a nonlinear study of oxygen cyclotron waves and the associated oxygen heating. Linear theory predicts that oxygen cyclotron waves will have smaller growth rates than hydrogen cyclotron waves. Results of a simulation study in which the free energy source is an initial drifting electron distribution indicate that oxygen cyclotron waves only grow to small amplitudes, while the hydrogen cyclotron waves achieve larger amplitudes. In an attempt to model more realistically the continuous ionospheric outflow, a simulation model is used, in which the electron velocity distribution is maintained by a constant flow of electrons. This latter model predicts that the oxygen waves grow to amplitudes much larger than the hydrogen waves resulting in the preferential heating of the heavier ions.

原文English
頁(從 - 到)795-798
頁數4
期刊Geophysical Research Letters
8
發行號7
DOIs
出版狀態Published - 1981 一月 1

All Science Journal Classification (ASJC) codes

  • 地球物理
  • 地球與行星科學(全部)

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