Analysis of ion-temperature-gradient instabilities using a gyro-fluid model in cylindrical plasmas

Genryu Hattori, Naohiro Kasuya, Masatoshi Yagi

Research output: Contribution to journalArticle

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Abstract

The excitation condition for ion-temperature-gradient (ITG) instabilities in linear devices is investigated using a gyro-fluid equation. The finite-Larmor-radius effect is included in the model, which helps to stabilize ITG instabilities. The critical values of ?, which is the ratio of the lengths of the density gradient to the temperature gradient, are obtained. Although the modenumbers of the most unstable modes are different with different discharge gases, their critical values have almost the same η level close to 1.0. The results are compared with those from the Hamaguchi-Horton model numerically and analytically.

Original languageEnglish
Article number3401060
JournalPlasma and Fusion Research
Volume10
DOIs
Publication statusPublished - Jan 1 2015

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cylindrical plasmas
ion temperature
temperature gradients
fluids
Larmor radius
gas discharges
gradients
excitation

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Cite this

Analysis of ion-temperature-gradient instabilities using a gyro-fluid model in cylindrical plasmas. / Hattori, Genryu; Kasuya, Naohiro; Yagi, Masatoshi.

In: Plasma and Fusion Research, Vol. 10, 3401060, 01.01.2015.

Research output: Contribution to journalArticle

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