Application of differential phase method to interferometry

Takuma Yamada, Akira Ejiri, Syun'Ichi Shiraiwa, Yuichi Takase

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1 Citation (Scopus)


The differential phase (DP) method was applied to microwave interferometry for the first time. Its advantage over standard interferometry is that the greatly reduced phase shift enables the unique determination of phase. Such a system was implemented on the Tokyo Spherical Tokamak-2 (TST-2), and demonstrated that the correct phase shift can be obtained even when the probing frequency is close to the cutoff density, and that very fast time evolutions of the line-integrated density can be measured.

Original languageEnglish
Article number124701
JournalReview of Scientific Instruments
Issue number12
Publication statusPublished - Dec 1 2006


All Science Journal Classification (ASJC) codes

  • Instrumentation

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