サブミリ波ジャイロトロンを光源とするプラズマ散乱計測

Material type: 規格・テクニカルリポート類

Author: 小川, 勇ほか

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Publication date: 2004-03

Material Format: Digital

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Note (General)：: 出版タイプ： NAThe performance of plasma scattering measurement (S/N ratio, the spatial and wave number resolutions) depends on intensity, wavelength range ...

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Material Type: 規格・テクニカルリポート類
Title: サブミリ波ジャイロトロンを光源とするプラズマ散乱計測
Author/Editor: 小川, 勇
板倉, 豊
明道, 政彦
出原, 敏孝
Publication Date: 2004-03
Publication Date (W3CDTF): 2004
Alternative Title: Plasma scattering measurement using a submillimeter wave gyrotron as a radiation source
Periodical title: 遠赤外領域開発研究
No. or year of volume/issue: 5
Volume: 5
Pages: 109-116
Target Audience: 一般
Note (General): 出版タイプ： NA
The performance of plasma scattering measurement (S/N ratio, the spatial and wave number resolutions) depends on intensity, wavelength range and quality of a probe beam. Because spatial and wave number resolutions are improved by focusing the beam and increasing the scattering angle, a submillimeter wavelength beam is most suitable for the measurement. Up to now, molecular vapor lasers and backward-wave oscillators have been used as the principal power sources. However, their output powers are lower than 0.5 W and 10 mW, respectively Application of high frequency gyrotron is effective in improving the C/N ratio of the measurement because of its capacity to deliver high powers. Unlike a molecular vapor laser, a gyrotron generates spreading radiation with TEmn mode structure. It is therefore necessary to convent the output radiation into a Gaussian beam (TEM00 mode), which is suitable for an effective transmission and a well-collimated probe beam. A final goal is to produce an optimal probe beam (high quality, intense submillimeter wave beam by using a new transmission line and to apply it to plasma scattering measurements with the aim of optimal performance of the measurement.
Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
https://irdb.nii.ac.jp
Original Data Provider (Database): 福井大学 : 福井大学学術機関リポジトリ