Multifaceted asymmetric radiation from the edge-like asymmetric radiative collapse of density limited plasmas in the Large Helical Device | Zendy

B. J. Peterson | Zendy; Yuhong Xu | Zendy; S. Sudo | Zendy; T. Tokuzawa | Zendy; K. Tanaka | Zendy; M. Osakabe | Zendy; S. Morita | Zendy; M. Goto | Zendy; S. Sakakibara | Zendy; J. Miyazawa | Zendy; K. Kawahata | Zendy; N. Ohyabu | Zendy; H. Yamada | Zendy; O. Kaneko | Zendy; A. Komori | Zendy

Open Access

Multifaceted asymmetric radiation from the edge-like asymmetric radiative collapse of density limited plasmas in the Large Helical Device

Author(s) -

B. J. Peterson,

Yuhong Xu,

S. Sudo,

T. Tokuzawa,

K. Tanaka,

M. Osakabe,

S. Morita,

M. Goto,

S. Sakakibara,

J. Miyazawa,

K. Kawahata,

N. Ohyabu,

H. Yamada,

O. Kaneko,

A. Komori

Publication year - 2001

Publication title -

physics of plasmas

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.75

H-Index - 160

eISSN - 1089-7674

pISSN - 1070-664X

DOI - 10.1063/1.1390330

Subject(s) - physics , plasma , radiative transfer , asymmetry , toroid , atomic physics , radiation , arc (geometry) , large helical device , kink instability , computational physics , optics , tokamak , nuclear physics , geometry , mathematics , quantum mechanics

Neutral beam injection heated discharges at the density limit in the Large Helical Device [O. Motojima, H. Yamada, A. Komori et al., Phys. Plasmas 6, 1843 (1999)] are terminated with asymmetric radiative collapse (ARC) exhibiting several properties in common with the MARFE (multifaceted asymmetric radiation from the edge) phenomenon: (1) A highly poloidally asymmetric radiation profile which is stronger on the inboard side. (2) This asymmetry is well correlated with the signal from the multichord interferometer. (3) Moreover, evidence from several diagnostics at different toroidal locations supports the possibility that ARC may be toroidally symmetric. However in contrast to MARFE, ARC is only observed in the period just prior to the quench of the plasma

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