Two-dimensional spatial structure of plasma turbulence in LMD-U

S. Inagaki, T. Maruta, H. Arakawa, T. Yamada, Y. Nagashima, K. Kamataki, N. Kasuya, S. Shinohara, K. Terasaka, M. Yagi, Y. Kawai, A. Fujisawa, K. Itoh, S. I. Itoh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A non-trigonometric wave is excited in the LMD-U device. Transition to a turbulent wave from the non-linear wave is made by controlling the strength and the shape of magnetic field and/or neutral pressure. To clarify the turbulence transition mechanism, the two-dimensional structure of the non-linear wave is observed by using the two-point correlation technique. Obtained results under this experimental condition are as follows: 1) The waveforms of Ĩis and Ṽf,up/down are similar to sawtooth waves and the PDFs are skewed. 2) The largest spectral peak is excited at 1.2kHz and the even and odd higher harmonic waves are also excited. 3) The coherence structure at 1.2kHz is broad both in the azimuthal and the radial directions. 4) A spiral-shaped (m = 1) wave is formed.

Original languageEnglish
Title of host publication35th EPS Conference on Plasma Physics 2008, EPS 2008 - Europhysics Conference Abstracts
Pages1450-1453
Number of pages4
Edition2
Publication statusPublished - Dec 1 2008
Event35th European Physical Society Conference on Plasma Physics, EPS 2008 Combined with the 10th International Workshop on Fast Ignition of Fusion Targets - Hersonissos, Crete, Greece
Duration: Jun 9 2008Jun 13 2008

Publication series

Name35th EPS Conference on Plasma Physics 2008, EPS 2008 - Europhysics Conference Abstracts
Number2
Volume32

Other

Other35th European Physical Society Conference on Plasma Physics, EPS 2008 Combined with the 10th International Workshop on Fast Ignition of Fusion Targets
CountryGreece
CityHersonissos, Crete
Period6/9/086/13/08

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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  • Cite this

    Inagaki, S., Maruta, T., Arakawa, H., Yamada, T., Nagashima, Y., Kamataki, K., Kasuya, N., Shinohara, S., Terasaka, K., Yagi, M., Kawai, Y., Fujisawa, A., Itoh, K., & Itoh, S. I. (2008). Two-dimensional spatial structure of plasma turbulence in LMD-U. In 35th EPS Conference on Plasma Physics 2008, EPS 2008 - Europhysics Conference Abstracts (2 ed., pp. 1450-1453). (35th EPS Conference on Plasma Physics 2008, EPS 2008 - Europhysics Conference Abstracts; Vol. 32, No. 2).