[PDF] Top 20 Scrape-off Layer Plasma Flow in L- and H-Mode Plasmas on JT-60U

... SOL flow in L- and H-mode plasmas showed that subsonic to sonic levels of the parallel Mach number (M // = ...SOL flow patterns were produced by a combination of the driving ... See full document

... the H-mode plasmas having Type-I ELMs (so-called, “Type-I” ELMy H-mode) is the large and periodic power and particles directed toward the divertor and/or the first- wall, which is ... See full document

... nonlinear simulations and the experimental ones is shown in Fig. 9. The error bars correspond to those for Fig. 8. Fig- ure 9(a) shows the χ nonlin i is lower for the counter-rotation case than for the co-rotation case ... See full document

... collisionless plasma so as to keep the density low in the radiation/recycling ...sheath-limited plasma also re- duces the ion flow velocity, parallel temperature, and elec- tric ...ion flow ... See full document

... the scrape-off layer, the SOLDIV code is ...the plasma wetted areas in the di- ...the plasma core en- ter the SOL at the upstream point whose location is deter- mined as a fraction of the ... See full document

... In JT-60U, the confinement properties and onset con- ditions of the internal transport barrier (ITB) in weak pos- itive magnetic shear, and weak and strong reversed mag- netic shear plasmas have been ... See full document

... SOL plasma to be sufficiently cool for recombination to ...SOL plasma can then be transfered to the wall by collisions with neutrals, thereby reducing the direct ion flux and deposited power incident on the ... See full document

... coating layer due to migra- tion of carbon atoms through grain ...coating layer and detailed carbon migration mechanisms, cross-sectional observations with field emission scanning electron microscope ... See full document

... shear plasmas above the no-wall beta ...ing mode and slowly growing mode have been observed as RWM precursors ...bursting mode, the so-called energetic-particle-driven wall mode (EWM) ... See full document

... ELMy H-mode plasmas are characterized by a pedestal structure and various edge localized modes (ELMs) in the edge ...The H mode operation with ELMs gives us a good confinement and a ... See full document

... CO-rotating H-mode plasmas (solid squares), over a wide range of χ φ , which radially varies by about one order of magnitude (χ φ ∼ 1- 30 m 2 ... See full document

... wall mode (RWM), and iv) more absorbed heating ...volume plasma, which suffers from the large ripple-induced loss in the ...in H- mode ...typical plasmas with small ripple loss, ... See full document

... the scrape of layer (SOL) or rf sheath rectification on plasma facing ...Deuterium plasmas may use either a Hydrogen or a Helium-3 minority ... See full document

... of plasma wall interaction SOL physics together with coupled pedestal and core physics ...beta plasmas is due to both an increase in pedestal pres- sure and core pressure peaking by collisionality and ... See full document

... shear plasmas on JT-60U ...the plasma rotation effect JT-60U has the advantage that the plasma toroidal rotation can be widely controlled us- ing neutral beams (NBs) with ... See full document

... ionizing plasma com- ponent is negligibly low in the divertor plasma parameter range, and that other different processes such as molec- ular assisted recombination (MAR) are ...in JT-60U ... See full document

... in H-D plasmas can be made very effective by arranging the plasma conditions such that the MC layer is located in the close vicinity of the Doppler-shifted resonance layer of the ... See full document

... (RF) plasma device was investigated in two different plasma production ...cylindrical plasma at a higher RF heating power and lower neutral pressure ...the plasma column at a lower RF heating ... See full document

... the plasma current after the mini-collapse decreased owing to the plasma resistance in the middle and edge regions, although the plasma current during the initial phase of the CQ decreased owing to ... See full document

... the plasma response two approaches are reported, (a) ad hoc screen- ing currents on resonant flux surfaces [Cahyna et ...(b) plasma profiles such as pressure, current density and toroidal rotation, used for ... See full document