학술논문
Rotational movement analysis based on Fourier-rectangular function transform for cylindrical plasma.
Document Type
Article
Author
Source
Subject
*CYLINDRICAL plasmas
*STELLAR oscillations
*PLASMA dynamics
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Language
ISSN
0021-8979
Abstract
This article presents a method to estimate the rotational velocity of a cylindrical plasma from its two-dimensional images by an extended use of the Fourier-rectangular function transform, which was proposed to analyze the structure and dynamics of a cylindrical plasma [K. Yamasaki e t a l., J. Appl. Phys. 126 , 043304 (2019)]. The proposed method is applied to tomography images of plasmas produced in a linear cylindrical device and succeeds in obtaining the radial distribution of rotational velocity and its fluctuations, providing an interesting finding, that is, the existence of flow modulation associated with m = 1 mode fluctuations. [ABSTRACT FROM AUTHOR]