Plasma and Fusion Research

Volume 16, 1201075 (2021)

Rapid Communications


Fourier-Rectangular Function Analysis of Spatiotemporal Structure of Bursting Phenomenon in a Cylindrical Plasma
Daiki NISHIMURA, Akihide FUJISAWA1), Yoshihiko NAGASHIMA1), Chanho MOON1), Kotaro YAMASAKI2), Taiki KOBAYASHI and Shigeru INAGAKI1)
Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka 816-8580, Japan
1)
Research Institute for Applied Mechanics, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka 816-8580, Japan
2)
Department of Mechanical Engineering, Graduate School of Engineering, Hiroshima University, Higashihiroshima, Hiroshima 739-8527, Japan
(Received 7 April 2021 / Accepted 16 April 2021 / Published 7 June 2021)

Abstract

The tomography measurement, with a help of a newly developed analysis called Fourier-rectangular function (FRF) transform, reveals the properties of the bursting phenomenon occurring at the lower operational boundary of the filling pressure in a cylindrical plasma produced with a helicon source. The analysis provided a clear difference in the spatiotemporal structure between the bursting and quiescent states in the phenomenon.


Keywords

tomography, fluctuation, linear magnetized plasma, plasma emission, asymmetry

DOI: 10.1585/pfr.16.1201075


References

  • [1] G.S. Yun et al., Phys. Rev. Lett. 107, 045004 (2011).
  • [2] A. Fujisawa et al., Plasma Phys. Control. Fusion 58, 025005 (2016).
  • [3] C. Moon et al., Sci. Rep. 11, 3720 (2021).
  • [4] K. Yamasaki et al., J. Appl. Phys. 126, 043304 (2019).
  • [5] D. Nishimura et al., J. Appl. Phys. 129, 093301 (2021).
  • [6] J. Morlet et al., Geophysics 47, 2 (1982).