Abstract
Recent experimental evidence suggests the importance of fast radial plasma transport in the scrape-off-layer (SOL) of tokamaks. The outward transport appears to be convective rather than diffusive, extends into the far SOL, and can produce significant recycling from the main-chamber walls, partially bypassing the divertor. A plausible theoretical mechanism to explain this phenomenon is the radial transport of blobs of locally dense plasma created by turbulent processes. In our experiment, a blob of plasma is produced using a plasma-gun and injected transverse to a non-uniform curved magnetic field inside a curved vacuum chamber. The plasma-blob from the washer stacked plasma gun interacts with the curved magnetic field, which has been created by a pair of coils. The coil is being energized by a capacitor bank. In this paper we report the radial velocity of the plasma-blob in presence of magnetic field. The radial velocity of plasma-blob decreases in the presence of magnetic field in comparison with the velocity without magnetic field.
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