Charge exchange lifetimes for ring current ions
Charge exchange lifetimes for ring current ions
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DOI：
10.1007/bf00239804
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发表时间：
1978-03
影响因子：
10.3
通讯作者：
Paul H. Smith;N. Bewtra
中科院分区：
文献类型：
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作者：
Paul H. Smith;N. Bewtra
在将电荷交换机制应用于地球磁层内的离子现象时，对观测的正确解释至关重要的是，尽可能准确地知道离子的电荷交换寿命。已发表的各种新成果大大修改了过去15年中用于空间物理研究的电荷交换寿命。一些较新的结果已被用于电荷交换衰变机制的应用，但使用一直是有限的，大部分是不完整的。中性氢密度分布现在产生的寿命比以前计算的更短，而寿命对俯仰角的函数依赖性提供了较慢的衰减离子镜像离开地磁赤道。这篇评论合并和总结了最新的和最好的测量的物理量参与的镜像磁层离子的电荷交换寿命的完整计算。
In applying the charge exchange mechanism to ion phenomena within the Earth's magnetosphere it is critical to the proper interpretation of observations that the charge exchange lifetimes for the ions be known as accurately as possible. Various new results have been published which significantly modify the charge exchange lifetimes which have been used in space physics research during the past decade and a half. Some of the newer results have been used in the application of the charge exchange decay mechanism but the use has been limited and for the most part incomplete. The neutral hydrogen density distribution now yields lifetimes which are shorter than previously calculated, while the functional dependence of the lifetimes on pitch angle provides for slower decay for ions mirroring off the geomagnetic equator. This review coalesces and summarizes the latest and best measurements of the physical quantities involved in the complete calculation of the charge exchange lifetime of the mirroring magnetospheric ions.