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Determination of both the electron density and the poloidal magnetic field in a tokamak plasma from polarimetric measurements of phase only

S E Segre1996年Plasma Physics and Controlled FusionIF 2.2出版社

It is shown that it is possible to measure both the plasma density and the poloidal magnetic field simultaneously by polarimetry, purely from phase measurements. The latter are advantageous compared with previously proposed amplitude measurements. The phase measurements can be performed either by modulating the input polarization (two alternative configurations for this modulation are considered), or by modulating the output polarization. The merits of the three schemes are discussed. The polarimeter required for these measurements is simpler and more robust than the conventional interferometer - polarimeter presently used for the combined density and magnetic field measurements.

日本語訳

プラズマ密度とポロイダル磁場を、偏光計測によって位相測定のみから同時に測定できることが示される。後者は、従来提案されている振幅測定と比較して有利である。位相測定は、入力偏光を変調する方法(この変調には2つの代替構成が検討される)または出力偏光を変調する方法のいずれかによって実施できる。これら3つの方式の利点について考察する。本測定に必要な偏光計は、現在密度・磁場同時測定に用いられている従来の干渉計-偏光計と比較して、より簡素で堅牢である。

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