Observation of Surface Discharge Phenomena on Polymeric Materials under Low Pressure using Pockels effect and LED light source
| Autor: | Komiyama, Yohei, Miyake, Hiroaki, Takada, Tatsuo, Tanaka, Yasuhiro |
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| Jazyk: | japonština |
| Rok vydání: | 2011 |
| Předmět: | |
| Zdroj: | 宇宙航空研究開発機構特別資料: 第7回宇宙環境シンポジウム講演論文集 = JAXA Special Publication: Proceedings of the 7th Spacecraft Enivironment Symposium. |
| ISSN: | 1349-113X |
| Popis: | 第7回宇宙環境シンポジウム (2010年10月19日-20日. 東京国際フォーラム) 7th Spacecraft Enivironment Symposium (October 19-20, 2010, Tokyo International Forum), Tokyo Japan We have developed a surface discharging measurement system, using Pockels effect. Pockels effect is a kind of electro-optic effect. It is the Pockels effect that The Phase shift of polarized light is proportional to applied electric field on the Pockels device. When the light which is produced by LED or LD propagate in the Pockels device, each of the two components travels at different velocities which depend on the refractive index of each component. After passing through the Pockels device, a phase shift occurs between the two components. This results in an elliptical polarization of the emerging beam. The degree of the phase shift the ellipticity depend on the electric field being applied to the Pockels device. We observed charging distributions on BSO(Pockels crystal) and several polymeric materials using the Pockels measurement system which is described above. When that experimental carried out the conditions which are as follows, Applied sine wave voltage(VP=5kV, f=20 Hz) to produce discharge. The around pressure of the system is controlled the range from 101 kPa(air atmosphere) to 21 kPa. From those experiment results, we found few characteristics which are as follows, Streamer length and length width are grown. Streamer shape depends on the ionization energy of each material. In the negative charging area, the streamer grown direction is inflected. 形態: カラー図版あり Physical characteristics: Original contains color illustrations 資料番号: AA0064933028 レポート番号: JAXA-SP-10-013 |
| Databáze: | OpenAIRE |
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