Impact of hydrogen fuelling on confinement properties in radiative improved mode

D. Kalupin; P. Dumortier; A. Messiaen; M. Z. Tokar; B. Unterberg; Geert Verdoolaege; G. Van Wassenhove; R. Weynants

doi:10.1088/0741-3335/45/8/308

Impact of hydrogen fuelling on confinement properties in radiative improved mode

D. Kalupin, P. Dumortier, A. Messiaen, M. Z. Tokar, B. Unterberg, Geert Verdoolaege, G. Van Wassenhove, R. Weynants

Laboratory for Plasma Physics

Research output: Contribution to journal › Article › peer-review

Abstract

The radiative improved (RI) mode at TEXTOR is a high confinement regime, which is obtained by the seeding of neon into deuterium plasmas. Recent experiments were aimed to study the influence of external gas fuelling on the confinement properties of the RI mode. In particular, it was found that a hydrogen puff into such plasmas leads to lower confinement compared with the discharges fuelled with the same amount of deuterium gas. This paper attempts to explain the reduction of confinement in RI plasmas with an external hydrogen puff and its relation to the level of impurity concentration, which is a critical parameter for RI mode confinement.

Original language	English
Pages (from-to)	1501-1510
Number of pages	10
Journal	Plasma Physics and Controlled Fusion
Volume	45
Issue number	8
DOIs	https://doi.org/10.1088/0741-3335/45/8/308
Publication status	Published - Aug 2003

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title = "Impact of hydrogen fuelling on confinement properties in radiative improved mode",

abstract = "The radiative improved (RI) mode at TEXTOR is a high confinement regime, which is obtained by the seeding of neon into deuterium plasmas. Recent experiments were aimed to study the influence of external gas fuelling on the confinement properties of the RI mode. In particular, it was found that a hydrogen puff into such plasmas leads to lower confinement compared with the discharges fuelled with the same amount of deuterium gas. This paper attempts to explain the reduction of confinement in RI plasmas with an external hydrogen puff and its relation to the level of impurity concentration, which is a critical parameter for RI mode confinement.",

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AU - Kalupin, D.

AU - Dumortier, P.

AU - Messiaen, A.

AU - Tokar, M. Z.

AU - Unterberg, B.

AU - Verdoolaege, Geert

AU - Van Wassenhove, G.

AU - Weynants, R.

PY - 2003/8

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AB - The radiative improved (RI) mode at TEXTOR is a high confinement regime, which is obtained by the seeding of neon into deuterium plasmas. Recent experiments were aimed to study the influence of external gas fuelling on the confinement properties of the RI mode. In particular, it was found that a hydrogen puff into such plasmas leads to lower confinement compared with the discharges fuelled with the same amount of deuterium gas. This paper attempts to explain the reduction of confinement in RI plasmas with an external hydrogen puff and its relation to the level of impurity concentration, which is a critical parameter for RI mode confinement.

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VL - 45

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JO - Plasma Physics and Controlled Fusion

JF - Plasma Physics and Controlled Fusion

IS - 8

ER -

Impact of hydrogen fuelling on confinement properties in radiative improved mode

Abstract

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