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RECENT RESULTS ON THE DISCREPANCY BETWEEN ELECTRON TEMPERATURE MEASUREMENTS IN HIGH TEMPERATURE PLASMAS IN JET

    https://doi.org/10.1142/9789812814647_0026Cited by:5 (Source: Crossref)
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    Abstract:

    The long standing disagreement between the central electron temperature measured by Thomson scattering and electron cyclotron emission (2nd harmonic, X-mode) in high performance plasmas observed in JET and TFTR is reexamined. In this paper we report on recent analysis carried out in JET with the aim of investigating the role of different plasma parameters, such as plasma heating scheme and fuelling, on the appearance of this discrepancy. Our analysis shows that the appearance of the discrepancy between the temperature diagnostics is correlated with the appearance of a high energy tail in the ion distribution function.