Geodesic acoustic mode spectroscopy II

Sanae I. Itoh, Seiya Nishimura, Kimitaka Itoh, Akihide Fujisawa, Yoshihiko Nagashima, Shigeru Inagaki

Research output: Contribution to journalArticle

Abstract

An extension of geodesic acoustic mode (GAM) spectroscopy [Plasma Phys. Control. Fusion 49, L7 (2007)] is proposed. The ratio between the lowest frequency of the co-existing ion acoustic mode (IAM) and the frequency of GAM enables us to identify the safety factor of toroidal plasmas. The lowest frequency can be detected by bispectrum analysis when both GAM and IAM are excited. The possibility of measuring the safety factor is discussed.

Original languageEnglish
Article number014
JournalPlasma and Fusion Research
Volume4
DOIs
Publication statusPublished - Jan 1 2009

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All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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