First Observation of the High Field Side Sawtooth Crash and Heat Transfer during Driven Reconnection Processes in Magnetically Confined Plasmas

Park, H. K. ; Luhmann, N. C., Jr. ; Donné, A. J. H. ; Classen, I. G. J. ; Domier, C. W. ; Mazzucato, E. ; Munsat, T. ; van de Pol, M. J. ; Xia, Z.

Princeton University. Plasma Physics Laboratory.

关键词: Heat Transfer;    Sawtooth Oscillations;    Jet;    70 Plasma Physics And Fusion Technology;    Magnetic Surfaces;   

DOI  :  10.2172/934606
RP-ID  :  PPPL-4135
RP-ID  :  DE-AC02-76CH03073
RP-ID  :  934606

美国|英语

来源: UNT Digital Library

【 摘 要 】

High resolution (temporal and spatial), two-dimensional images of electron temperature fluctuations during sawtooth oscillations were employed to study driven reconnection processes in magnetically confined toroidal plasmas. The combination of kink and local pressure driven instabilities leads to an "X-point" reconnection process that is localized in the toroidal and poloidal planes. The reconnection is not always confined to the magnetic surfaces with minimum energy. The heat transport process from the core is demonstrated to be highly collective rather than stochastic.