@inproceedings{oai:jaxa.repo.nii.ac.jp:00004443,
 author = {渋谷, 一晃 and 小宮山, 洋平 and 武田, 雷蔵 and 三宅, 弘晃 and 田中, 康寛 and 高田, 達雄 and Shibuya, Kazuaki and Komiyama, Yohei and Takeda, Raizo and Miyake, Hiroaki and Tanaka, Yasuhiro and Takada, Tatsuo},
 book = {宇宙航空研究開発機構特別資料: 第8回宇宙環境シンポジウム講演論文集, JAXA Special Publication: Proceedings of the 8th Spacecraft Environment Symposium},
 month = {Feb},
 note = {第8回宇宙環境シンポジウム (2011年10月18-19日. 東京国際展示場), 東京, 8th Spacecraft Enivironment Symposium (October 18-19, 2011, Tokyo Big Sight), Tokyo Japan, We have developed a surface discharging measurement system, using Pockels effect. Pockels effect is a kind of electro-optic effect. The Pockels effect means that the phase shift of polarized light, which phases through the Pockels device, is proportional to applied electric field to the Pockels device. In this measurement system using Pockels effect, when the light which is produced by LED or LD propagate in the Pockels device, each of two orthogonal components travels different velocities which depend on the refractive index of each component. After the light passing through the Pockels device, a phase shift occurs in the light between the two components. This results in an elliptical polarization of the emerging beam. The degree of the phase shift and the ellipticity depend on the electric field being applied to the Pockels device. Therefore, by observing the distribution of the phase shift of the emerged light from the BSO (Pockels crystal), we can measure the electric field distribution in BSO. In our experiments, we apply an sinusoidal wave voltage to a needle electrode on the sample put on the BSO cell. When the applied voltage makes a surface discharge on the sample by the applied sinusoidal voltage, the charge remained on the sample makes the electric field distribution in the BSO cell. Therefore, by measuring the distribution of the phase shift, we can observe the surface discharge pattrn. In this experiment, the atmosphere pressure around the sample is controlled in the range from 101 kPa to 11 kPa. From those experimental results, we found the patterns on various materials are categorized into two characteristics. Furthermore, we also found that the two characteristics strongly depend on the ionization energy of the materials of the samples., 形態: カラー図版あり, Physical characteristics: Original contains color illustrations, 資料番号: AA0065159024, レポート番号: JAXA-SP-11-012},
 pages = {181--185},
 publisher = {宇宙航空研究開発機構, Japan Aerospace Exploration Agency (JAXA)},
 title = {宇宙機用絶縁材料における沿面放電観測},
 volume = {JAXA-SP-11-012},
 year = {2012}
}