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Analysis of the Limiter Material Erosion in T-3M Tokamak

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7 Author(s)

The limiter material erosion dynamics under disruption instability in T-3M tokamak was studied. Erosion mechanisms of graphite (uglesitall) and boron nitride were examined. It was shown that the erosion of the limiter arises not only at the moment of disruption, but also before it, when the MHD perturbations of plasma column emerge. We had evidence of the superthermal electrons playing a significant role in the limiter erosion. The erosion decreases with the plasma density rising above the threshold value.

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Plasma Science, IEEE Transactions on  (Volume:13 ,  Issue: 5 )