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Koubiti, M.*; Nakano, Tomohide; Marandet, Y.*; Mekkaoui, A.*; Mouret, L.*; Rosato, J.*; Stamm, R.*
Journal of Nuclear Materials, 438, p.S599 - S601, 2013/07
Times Cited Count：4 Percentile：32.32(Materials Science, Multidisciplinary)We have measured a profile of C IV spectral line emitted from the detached diverter plasma of JT-60U with a high-wavelength resolution spectrometer, and analyzed it with PPP code. In the previous analysis, the measured spectral profile was compared with the spectral profile calculated by the PPP code with one pair of electron density and temperature. With this method, the spectral profiles measured around the X-point were well reproduced, but the spectral profile measured at a very center of the X-point was not reproduced. In the present analysis, we have succeeded to reproduce the spectral profile measured at the very center of the X-point by synthesizing two spectra calculated with two pairs of electron densities and temperatures. One pair was 1
10
m
and 23.0 eV, and the other 110 m and 2.5 eV. The contribution to the intensity of C IV spectral line of the first pair was 65% and that of the second 35%.
Koubiti, M.*; Nakano, Tomohide; Capes, H.*; Marandet, Y.*; Mekkaoui, A.*; Mouret, L.*; Rosato, J.*; Stamm, R.*
Contributions to Plasma Physics, 52(5-6), p.455 - 459, 2012/06
Times Cited Count：4 Percentile：17.66(Physics, Fluids & Plasmas)The spectral profile of C IV (
=6-7) measured from the strong radiation zone (X-point MARFE) in a detached plasma of JT-60U with a high resolution spectrometer was analyzed by PPP code. In the previous analysis, a spectral profile calculated by the PPP code with an input of single pair of electron density and temperature was compared to the measured spectral profile. It was found that the spectral profiles measured around the X-point MARFE were reproduced with the calculated spectral profile but the ones measured at the center of the X-point MARFE were not. In the present analysis, two spectral profiles were calculated with two pairs of electron density and temperature and were summed up, leading to successful reproduction of the measured spectral profile. The two pairs of electron density and temperature used for the calculation were 110 m and 23.0 eV, and 610 m and 2.5 eV, respectively, with a mixture ratio of 65:35.
