Radial electric field and transport near the rational surface and the magnetic island in LHD
The structure of the radial electric field and heat transport at the magnetic island in the large
helical device (LHD) are investigated by measuring the radial profile of the poloidal flow with
charge exchange spectroscopy and measuring the time evolution of the electron
temperature with ECE. A vortex-like plasma flow along the magnetic flux surface inside the
magnetic island is observed when the n/m= 1/1 external perturbation field becomes large
enough to increase the magnetic island width above a critical range (15–20% of minor …
helical device (LHD) are investigated by measuring the radial profile of the poloidal flow with
charge exchange spectroscopy and measuring the time evolution of the electron
temperature with ECE. A vortex-like plasma flow along the magnetic flux surface inside the
magnetic island is observed when the n/m= 1/1 external perturbation field becomes large
enough to increase the magnetic island width above a critical range (15–20% of minor …
Radial Electric Field and Transport near the Rational Surface
AS Pysarevsky, IA Kozak, NN Chernyshov - 2010 - openarchive.nure.ua
The structure of the radial electric field and heat transport at the magnetic island in the Large
Helical Device is investigated by measuring the radial profile of poloidal flow with charge
exchange spectroscopy. The convective poloidal flow inside the island is observed when the
n/m= l/l external perturbation field becomes large enough to increase the magnetic island
width above a critical value (15-20% of minor radius) in LHD. This convective poloidal flow
results in a non-flat space potential inside the magnetic island. The sign of the curvature of …
Helical Device is investigated by measuring the radial profile of poloidal flow with charge
exchange spectroscopy. The convective poloidal flow inside the island is observed when the
n/m= l/l external perturbation field becomes large enough to increase the magnetic island
width above a critical value (15-20% of minor radius) in LHD. This convective poloidal flow
results in a non-flat space potential inside the magnetic island. The sign of the curvature of …