<論文>アダマール電子エネルギー分析器による帰還電子のエネルギー分布測定

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Measurements of energy spectra of energetic electrons in the F-layer were carried out in the energy range from 0.13 keV up to 1.3 keV by means of an Hadamard energy spectrometer which was on board the sounding rocket K-9M-66, launched form Uchinoura Japan on January 21, 1979, at 1806JST. The experimental apparatus which consisted of an electron gun, five current probes and the Hadamard energy spectrometer with a counting system was successfully operated. However, the electron flux that passed through the entrance slit of the analyzer was strongly modulated with the spinning frequency of the rocket, and hence the reconstructed spectra obtained by means of the Hadamard transfrom were fairly distorted from those of expected. Therefore, a correction of the spectrum was made by taking account of the results of current probes. In addition to this correction the least square adjustment was attempted at some sacrifice of the altitude dependence. The energy spectra thus obtained by these procedures showed satisfactory agreement with those of a point-by-point measurement made by scanning a narrow single slit.
宇宙航空研究開発機構の論文