Kink fishbone branch
Web1 jan. 2001 · Thus, a new theory is required, which stimulated the fulfillment of this present work. There are two fishbone branches: the high-frequency (precession) branch and the low-frequency... Web[en] A special kind of internal kink mode, the fishbone, can be excited by the energetic particles in tokamak plasma. Theoretical analysis of fishbone modes based on the ideal MHD framework have predicted that two branches of modes exist. One is the Chen-White branch with ω ≅ ω dm >, corresponding to a higher threshold in β h, the other is the …
Kink fishbone branch
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WebThe internal kink branch at low fast particle density, where the mode is stabilized by the alpha particles, and the fishbone branch, where a new Energetic Particle Mode is … WebAs a typical energetic particle mode, fishbone have two branches, one is high frequency oscillation which determined by resonant fast ion’s characteristic drift frequency, usually …
Webtokamaks. It is often associated with the occurrence of sawteeth [1], but fishbone oscillations [2] can also be caused by different branches of the internal kink dispersion relation [3]. In future tokamaks like ITER, where the q=1 radius is expected to be large, instabilities caused by n=1, m=1 internal Web6 mrt. 2012 · An energetic-particle (EP)-driven off-axis-fishbone-like mode (OFM) often triggers a resistive wall mode (RWM) in JT-60U and DIII-D devices, preventing long-duration high-βN discharges. In these experiments, the EPs are energetic ions (70-85 keV) injected by neutral beams to produce high-pressure plasmas. EP-driven bursting events reduce …
Web15 jul. 2016 · Resistive fishbones with and without an ideal wall are investigated. It is found that, in the presence of energetic particles as well as plasma resistivity, two branches of … Web19 jul. 2016 · It is found that energetic particle branch of the mode is unstable with the driving of fast-particle precession drifts and corresponds to a precessional fishbone. The …
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Webreferred to as precessional fishbones, are caused by the fishbone branch of the internal kink mode. The fishbone branch is not a "normal solution" of the MHD dispersion … almay intense i-colorWeb5 mei 2011 · (a) The internal kink and classical fishbone and (b) the RWM branch and EPdriven branch. See text for explanation of the paradigm. JT-60U (left) and DIII-D (right) configurations and q-profiles. almay goddess glitter glossWeb5 mei 2011 · These comparative studies suggest that an energetic particle-driven “off-axis-fishbone-like mode” is a new EP-driven branch of the external kink mode in wall … almay intense i-color defining linerWeb5 mei 2011 · These comparative studies suggest that an energetic particle-driven “off-axis-fishbone-like mode” is a new EP-driven branch of the external kink mode in wall-stabilized plasmas, analogous to the relationship of the classical fishbone branch to the internal kink mode. ACKNOWLEDGMENTS almay i color mascaraWeb2 apr. 2009 · In high-b plasmas, typical of spherical tori, the usual kink/fishbone branch may be stabilized by the reversal of the direction of the toroidal particle precession drift, … almay intense i color eyeliner raisin quartzWeb21 dec. 2024 · In this paper, we analyze the modification of fast particles on the nonlinear radial displacement of m = 1 internal kink mode with a shoulder-like equilibrium current theoretically. Using the matching method on the solutions of the outer and inner regions, we derive the analytical form of nonlinear radial displacement in the limit of q' = q" = 0, which … almay intense i-color eyeliner discontinuedWebusual branch of the ideal internal kink,7 unstable for plasma 6 (the ratio of plasma pressure to magnetic pressure) greater than a threshold value, is stabilized by a trapped particle … almay intense i-color eyeliner