Photoelectron fluxes in the ionosphere
Photoelectron fluxes in the ionosphere
复制标题
电离层中的光电子通量
DOI：
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发表时间：
1970
期刊：
影响因子：
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通讯作者：
P. Banks
中科院分区：
文献类型：
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作者：
A. Nagy;P. Banks
计算了黎明前和阳光照射大气的电离层中的光电子通量和能谱，同时考虑了传输、弹性和非弹性碰撞以及环境电子的能量损失。对于黎明前的模型，结果表明很大一部分入射电子被反向散射。通过使用最近对高空入射电子通量的黎明前测量，计算了 O I (6300 A) 发射率和二次电离率。对于阳光照射的大气，计算出的逃逸通量约为 4.1×108 个电子 cm−2 sec−1。目前的结果与最近的火箭测量和之前的计算进行了比较。还讨论了最近注意到的极地地区 O I (1304 A) 排放减少的问题。
Calculations have been made of photoelectron fluxes and energy spectra in the ionosphere for predawn and sunlit atmospheres, taking account of transport, elastic and inelastic collisions, and energy loss to ambient electrons. For predawn models the results indicate that a significant fraction of the incoming electrons are backscattered. By using recent predawn measurements of the high-altitude incident electron flux, the rates of O I (6300 A) emission and secondary ionization rates are computed. An escape flux of the order of 4.1×108 electrons cm−2 sec−1 is calculated for the sunlit atmosphere. The present results are compared with recent rocket measurements and previous calculations. The problem of a recently noted reduction in O I (1304 A) emissions in polar regions is also discussed.