The University of Tokyo
The University of Tokyo
Department of Solar System Sciences, Institute of Space and Astronautical, Japan Aerospace Exploration Agency (JAXA)(ISAS)
The University of Tokyo
The University of Tokyo
EXCEED (EXtreme ultraviolet spectrosCope for ExosphEric Dynamics) observes the extreme ultraviolet radiation from planetary atmosphere on the HISAKI satellite since its launch in September 2013. The laminar-type diffraction grating is used in the instrument. For the laminar-type grating, it is known that there are no secondary diffracted lights in theory. However, the contamination of secondary lights is indicated from the data obtained by EXCEED. Therefore, the evaluation of the diffraction efficiency of the secondary lights is necessary for scientific analysis using data obtained by EXCEED. In this work, we evaluate the diffraction efficiency of the secondary lights by analyzing the spectral data obtained by EXCEED. The results are compared with the laboratory measurements by using the spare model (qualification model).
内容記述
形態: カラー図版あり
内容記述(英)
Physical characteristics: Original contains color illustrations