Hauptseite > Publikationsdatenbank > Peculiarity of highly radiating multi-impurity seeded H -mode plasmas on JET with ITER-like wall > print

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024 7 _ |a 10.1088/1402-4896/ab5753
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024 7 _ |a 1402-4896
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037 _ _ |a FZJ-2020-01923
082 _ _ |a 530
100 1 _ |a Huber, A.
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245 _ _ |a Peculiarity of highly radiating multi-impurity seeded H -mode plasmas on JET with ITER-like wall
260 _ _ |a Stockholm
|c 2020
|b The Royal Swedish Academy of Sciences
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520 _ _ |a On JET with fully metallic first wall, highly radiative conditions with N2, Ne and Ar as well as their mixture as radiators are approached in high density H-mode plasmas. The confinement increases from H 98(y,2) = 0.65 in unseeded pulses with γ rad ~ 30% to a value of H 98(y,2) = 0.75 at γ rad ~ 50% with N2 injection. A degradation of the pedestal profile is compensated by steeper core n e and T e profiles. Further increase of γ rad with increase of the N2 seeding rate leads to a moderate confinement degradation which can be avoided by applying of combined impurity seeding. The enhancement of the plasma performance for the radiation fractions beyond 55% with the maximum value of H 98(y,2) = 0.78 is reached with combined N2 + Ne and N2 + Ar impurity injections. The observed intense, strongly localized radiation at the X-point inside the confined plasma in the scenarios with the highest radiated power fraction is interlinked to complete divertor detachment. In the JET-ILW, the X-point radiation is stable, reproducible and reversible.
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700 1 _ |a Wischmeier, M.
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700 1 _ |a Bernert, M.
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700 1 _ |a Wiesen, S.
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700 1 _ |a Glöggler, S.
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700 1 _ |a Aleiferis, S.
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700 1 _ |a Brezinsek, S.
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700 1 _ |a Calabro, G.
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700 1 _ |a Carvalho, P.
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700 1 _ |a Huber, V.
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700 1 _ |a Sergienko, G.
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700 1 _ |a Solano, E. R.
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700 1 _ |a Giroud, C.
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700 1 _ |a Groth, M.
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700 1 _ |a Jachmich, S.
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700 1 _ |a Linsmeier, Ch
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700 1 _ |a Matthews, G. F.
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700 1 _ |a Meigs, A. G.
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700 1 _ |a Mertens, Ph
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700 1 _ |a Sertoli, M.
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700 1 _ |a Silburn, S.
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700 1 _ |a Telesca, G.
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773 _ _ |a 10.1088/1402-4896/ab5753
|g Vol. T171, p. 014055 -
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856 4 _ |y Published on 2020-03-16. Available in OpenAccess from 2021-03-16.
|u https://juser.fz-juelich.de/record/875292/files/Postprint%20Huber_Peculiarity.pdf
856 4 _ |y Published on 2020-03-16. Available in OpenAccess from 2021-03-16.
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