TY - GEN
T1 - Two-dimensional spatial structure of plasma turbulence in LMD-U
AU - Shigeru, Inagaki
AU - Maruta, T.
AU - Arakawa, H.
AU - Yamada, T.
AU - Nagashima, Y.
AU - Kamataki, K.
AU - Kasuya, N.
AU - Shinohara, S.
AU - Terasaka, K.
AU - Yagi, M.
AU - Kawai, Y.
AU - Fujisawa, A.
AU - Itoh, K.
AU - Itoh, Sanae
N1 - Copyright:
Copyright 2013 Elsevier B.V., All rights reserved.
PY - 2008
Y1 - 2008
N2 - 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.
AB - 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.
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M3 - Conference contribution
AN - SCOPUS:84873019434
SN - 9781622763351
T3 - 35th EPS Conference on Plasma Physics 2008, EPS 2008 - Europhysics Conference Abstracts
SP - 1450
EP - 1453
BT - 35th EPS Conference on Plasma Physics 2008, EPS 2008 - Europhysics Conference Abstracts
T2 - 35th European Physical Society Conference on Plasma Physics, EPS 2008 Combined with the 10th International Workshop on Fast Ignition of Fusion Targets
Y2 - 9 June 2008 through 13 June 2008
ER -