PRECISE MEASUREMENTS OF DIELECTRIC ANISOTROPY IN ICE Ih AT 35GHz USING AN OPEN MICROWAVE RESONATOR

• MORISHIMA Shigenori

  Department of Applied Physics, Faculty of Engineering, Hokkaido University

• FUJITA Shuji

  Department of Applied Physics, Faculty of Engineering, Hokkaido University

• MATSUOKA Takeshi

  Department of Applied Physics, Faculty of Engineering, Hokkaido University

• MAE Shinji

  Department of Applied Physics, Faculty of Engineering, Hokkaido University

抄録

Precise measurement of the dielectric anisotropy in ice Ih at 35GHz was carried out using an open microwave resonator (Fabry-Perot resonator). The purpose of the measurement was to obtain physical parameters necessary for analysis of the polarization state of the electromagnetic waves that propagate through ice masses. The open resonator method was used, because it is suitable for detecting the precise value of dielectric anisotropy, since we can detect both components, permittivity parallel to the c-axis (ε'_<//c>) and permittivity perpendicular to the c-axis (ε'_<⊥c>), at once from a single ice crystal without moving. The result of the measurement at -20℃ was as follows : ε_<//c> is 3.2016±0.0003 and ε'_<⊥c> is 3.1681±0.0003. Thus the dielectric anisotropy (Δε'=ε'_<//c>-ε'_<⊥c>) becomes 0.0335±0.0004.

収録刊行物

• Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology

  Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology 8 201-, 1994-11

  国立極地研究所

詳細情報

• CRID: 1573387451666539264
• NII論文ID: 110001026002
• NII書誌ID: AA10756213
• ISSN: 09142037
• 本文言語コード: en
• データソース種別:
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