@inproceedings{oai:jaxa.repo.nii.ac.jp:00016770, author = {豊田, 康裕 and 西山, 和孝 and 國中, 均 and Toyoda, Yasuhiro and Nishiyama, Kazutaka and Kuninaka, Hitoshi}, book = {宇宙輸送シンポジウム: 講演集録, Proceedings of Space Transportation Symposium}, month = {}, note = {平成20年度宇宙輸送シンポジウム(2009年1月19日-20日, 宇宙航空研究開発機構宇宙科学研究本部), An accelerator grid is sputtered due to impingement of charge-exchange ions. The erosion of the grid limits the normal operation of the microwave discharge ion engine, in which long life and high reliability are inherent because of electrode-less plasma generations. We measured aperture shape of C/C grid after 20,000 hour endurance test. This measurement method was using a digital microscope. This paper reports measurement techniques and results of aperture shape., 形態: カラー図版あり, 資料番号: AA0064292077}, publisher = {宇宙航空研究開発機構宇宙科学研究本部, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)}, title = {二万時間耐久試験後C/Cグリッドの三次元損耗形状測定}, volume = {平成20年度}, year = {2009} }