Dynamics of plasma channel in a parallel-plate plasma gun |
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Institution: | 1. Center for Advance Research in Fusion Reactor Engineering, Seoul National University, Seoul 151-744, Republic of Korea;2. Department of Nuclear Engineering, Seoul National University, Seoul 151-744, Republic of Korea |
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Abstract: | Lumped parameter models for describing dynamics of the plasma channel in a parallel-plate plasma gun are compared with the experimental results obtained from two plasma guns with different rail geometries. Comparison between the experiments and the numerical calculations reveals that the lumped parameter models can be utilized to describe the dynamic motion of the plasma channel quite well. Parametric study shows that minimizing the line inductance and increasing the charging voltage on a capacitor as well as minimizing the gas injection time for reducing the mass of the plasma channel are the key factors to increase the flow velocity of the plasma jet ejected from the plasma gun. |
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Keywords: | Plasma gun Lumped parameter model Plasma jet Edge localized mode Divertor |
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