Plasma and Fusion Research
Online ISSN : 1880-6821
ISSN-L : 1880-6821
Rapid Communications
Identification of Quasi-Periodic Nonlinear Waveforms in Turbulent Plasmas
Shigeru INAGAKIYudai MIWATatsuya KOBAYASHITakuma YAMADAYoshihiko NAGASHIMATomohiro MITSUZONOHiromitsu FUJINOMakoto SASAKINaohiro KASUYAMaxime LESURYusuke KOSUGAAkihide FUJISAWASanae-I. ITOHKimitaka ITOH
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2014 Volume 9 Pages 1201016

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Abstract

A new method is presented for identifying waveforms of fluctuations in turbulent plasmas. The method is based on heartbeat analysis in which the convolution of a waveform is obtained by employing the phase tracking method. Phase tracking is performed by correlating raw time-series data with a template waveform; the template is evaluated through iteration procedure. The method is applied to fluctuations in a PANTA plasma, and the nonlinear waveform and its distribution of periods are obtained.

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© 2014 by The Japan Society of Plasma Science and Nuclear Fusion Research
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