Conjugate photoelectron fluxes observed on Atmosphere Explorer C
Conjugate photoelectron fluxes observed on Atmosphere Explorer C
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DOI：
10.1029/gl004i003p00109
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发表时间：
1977-03
影响因子：
5.2
通讯作者：
W.K. (Bill) Peterson;J. P. Doering;T. Potemra;R. Mcentire;C. O. Bostrom
中科院分区：
文献类型：
--
作者：
W.K. (Bill) Peterson;J. P. Doering;T. Potemra;R. Mcentire;C. O. Bostrom
大气探索者 C 航天器上的光电子能谱仪实验测量了磁性共轭点附近区域的太阳照射产生的沉淀光电子通量的高分辨率能谱。当航天器远离终结者且当地太阳天顶角高达 160° 时，已观察到共轭光电子。观测到的电子能谱的形状与 Doering 等人 1976 年报道的大气探索者 E 航天器的高空光电子能谱几乎相同。对共轭光电子能谱中残余光谱特征的识别表明，在 ± 1 eV 的实验不确定度内，来自磁共轭点的光电子没有经历任何加速。观察到的共轭光电子通量的大小在不同路径之间变化很大，但在某些情况下，观察到 250 公里处的通量高达阳光照射共轭点附近 300 公里处逃逸光电子通量大小的一半。对沉淀和反向散射通量的观测提供了低能（10 eV - 60 eV）电子反照率的直接测量。
High resolution energy spectra of the flux of precipitating photoelectrons which arise from solar illumination of the area near the magnetic conjugate point have been measured with the Photoelectron Spectrometer Experiment on the Atmosphere Explorer C Spacecraft. Conjugate photoelectrons have been observed when the spacecraft was well away from the terminator at local solar zenith angles up to 160°. The shape of the observed electron energy spectrum is almost identical to that reported for high altitude photoelectron spectra from the Atmosphere Explorer E Spacecraft by Doering et al., 1976. Identification of the residual spectral features in the energy spectra of the conjugate photoelectrons shows that to within the experimental uncertainty of ± 1 eV, the photoelectrons from the magnetic conjugate point have not experienced any acceleration. The magnitude of the observed conjugate photoelectron flux varies considerably between passes, but in some cases the 250 km flux has been observed to be as much as half of the magnitude of the escaping photoelectron flux at 300 km near the sunlit conjugate point. Observations of the precipitating and backscattered flux provide a direct measurement of the low energy (10 eV - 60 eV) electron albedo.