Plasma diagnostics with tracer-encapsulated solid pellet

Shigeru Sudo, Naoki Tamura, Sadatsugu Muto, Tetsuo Ozaki, Chihiro Suzuki, Hisamichi Funaba, Izumi Murakami, Daiji Kato, Shigeru Inagaki, Katsumi Ida

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7 Citations (Scopus)


The diagnostics method of a tracer-encapsulated solid pellet (TESPEL) has been developed. TESPEL consists of polystyrene as an outer shell and of specific material as a tracer in the core. Owing to the advantages of the TESPEL, the following results have been successfully obtained: (1) distinctive different feature of impurity transport between the plateau and Pfirsch-Schlüter regimes depending on the impurity source location which is analyzed with the STRAHL code, (2) specific feature of a non-local thermal transport such as abrupt increase of electron temperature in the plasma core in case of plasma cooling in the plasma periphery due to a small TESPEL injection, (3) spatially resolved energy distribution of the high energy particles obtained by a pellet charge exchange method, (4) longer impurity containment inside the magnetic island which is observed by depositing the tracers in the magnetic island by means of the TESPEL, and (5) identification of new spectral lines using interested atoms contained in the core of the TESPEL.

Original languageEnglish
Article number1402039
JournalPlasma and Fusion Research
Publication statusPublished - 2014

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics


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