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First Spectroscopic Results with Tin Limiter on FTU Plasma

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Abstract

Since the end of 2016 experiments were performed on FTU with a tin limiter, for testing liquid metals under reactor relevant thermal load up to 17 MW/m2 in nearly stationary conditions. FTU is the first tokamak in the world operating with a liquid tin limiter and one of the pioneers in liquid metal application. The preliminary analysis of the experimental data has been focused in detecting the presence of tin in the discharge: suitable monitors are the spectroscopic diagnostics in the visible and UV ranges. The experimental observation of the tin spectral lines represents a new goal for extending the database of atomic nuclear data in the plasma tokamak research. In particular, 607.8 and 645.3 nm spectral lines of SnII have been observed. In addition, all the expected spectral lines in VUV range have been detected, 20.4 nm of SnXXI and 21.9 nm and 27.6 nm of SnXXII.

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Correspondence to G. M. Apruzzese.

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Published in Russian in Fizika Plazmy, 2018, Vol. 44, No. 7, pp. 538–543.

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Apruzzese, G.M., Apicella, M.L., Iafrati, M. et al. First Spectroscopic Results with Tin Limiter on FTU Plasma. Plasma Phys. Rep. 44, 636–640 (2018). https://doi.org/10.1134/S1063780X18070012

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  • DOI: https://doi.org/10.1134/S1063780X18070012

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