Journal
PHYSICA SCRIPTA
Volume 93, Issue 10, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1402-4896/aadb85
Keywords
plasma gun; tokamak plasma fueling; plasma jet; Alfven conductivity; plasma diagnostic
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Funding
- Russian Foundation for Basic Research (RFBR) [16-08-00338 A]
- RFBR [16-02-00622 A]
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Deep plasma fueling by the injection of high-speed high-density hydrogen plasma jet has been observed on Globus-M injection of unmagnetized hydrogen jet by a plasma gun led to a twofold increase of plasma core density. Presented here are the results of measurement of plasma jet velocities during the movement in the tokamak plasma. It is demonstrated that the deceleration times of the hydrogen and helium jets are in accordance with the predictions of the plasma jet penetration models based on consideration of the Alfven conductivity of the plasma and inhomogeneity and curvature of the magnetic field. It is confirmed that the main mechanism governing the penetration depth of the jets in the tokamak plasma for considered conditions is the Alfven conductivity.
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