An edge particle transport barrier was observed as a transition phenomenon characterized by the rapid decrease of the Hα signal and the increase of line-averaged density in the neutral beam heated plasma in the compact helical system (CHS) when the heating power exceeds a certain threshold. A beam emission spectroscopy (BES) measurement showed a rapid increase of local plasma density near the plasma edge accompanied by coherent-like density fluctuations around 5 kHz. Keywords: BES, density fluctuation, edge transport barrier, H-mode, CH
A thermal neutral beam probe combined with a spectroscopic technique is numerically demonstrated to ...
Density and potential fluctuations are simultaneously measured, using a heavy ion beam probe, in ele...
Results from recent experiments on the DIII-D tokamak have revealed many important details on transp...
The formation of an edge transport barrier (ETB) has recently been found in the Compact He-lical Sys...
"An edge transport barrier (ETB) formation and an improved L-mode (IL mode) have been simultaneously...
Precise measurements of edge density profiles in various discharges have been performed successfully...
"Large progress in the confinement improvement study in CHS was made for the internal transport barr...
Simultaneous measurements of radial profiles of electron density and its fluctuations have been perf...
In H-mode plasmas the turbulent transport of energy and particles is strongly suppressed in a thin r...
The 3-D spatial structure - radial locality and poloidal/toroidal mode numbers - of the magnetohydro...
The effects of changing beam and plasma species on the edge transport barrier are investigated for E...
"In CHS rapid H-mode transition is observed in NBI heated deuterium and hydrogen plasmas without obv...
"Control of rotational transform profile with a small ohmic heating ( OH-) current to increase the r...
The Heavy Ion Beam Probe (HIBP) diagnostics on T-10 tokamak was used for direct study the local valu...
The mechanism of density profile formation has been studied in CHS. It has been generally known that...
A thermal neutral beam probe combined with a spectroscopic technique is numerically demonstrated to ...
Density and potential fluctuations are simultaneously measured, using a heavy ion beam probe, in ele...
Results from recent experiments on the DIII-D tokamak have revealed many important details on transp...
The formation of an edge transport barrier (ETB) has recently been found in the Compact He-lical Sys...
"An edge transport barrier (ETB) formation and an improved L-mode (IL mode) have been simultaneously...
Precise measurements of edge density profiles in various discharges have been performed successfully...
"Large progress in the confinement improvement study in CHS was made for the internal transport barr...
Simultaneous measurements of radial profiles of electron density and its fluctuations have been perf...
In H-mode plasmas the turbulent transport of energy and particles is strongly suppressed in a thin r...
The 3-D spatial structure - radial locality and poloidal/toroidal mode numbers - of the magnetohydro...
The effects of changing beam and plasma species on the edge transport barrier are investigated for E...
"In CHS rapid H-mode transition is observed in NBI heated deuterium and hydrogen plasmas without obv...
"Control of rotational transform profile with a small ohmic heating ( OH-) current to increase the r...
The Heavy Ion Beam Probe (HIBP) diagnostics on T-10 tokamak was used for direct study the local valu...
The mechanism of density profile formation has been studied in CHS. It has been generally known that...
A thermal neutral beam probe combined with a spectroscopic technique is numerically demonstrated to ...
Density and potential fluctuations are simultaneously measured, using a heavy ion beam probe, in ele...
Results from recent experiments on the DIII-D tokamak have revealed many important details on transp...