Assessment of effects of neutrals on the power threshold for L-H transitions in DIII-D

L. W. Owen; B. A. Carreras; R. Maingi; P. K. Mioduszewski; T. N. Carlstrom; R. J. Groebner

doi:10.1088/0741-3335/40/5/030

Assessment of effects of neutrals on the power threshold for L-H transitions in DIII-D

L. W. Owen, B. A. Carreras, R. Maingi, P. K. Mioduszewski, T. N. Carlstrom, R. J. Groebner

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23 Scopus citations

Abstract

To assess the effect of edge neutrals on the low-to-high confinement transition threshold, a broad range of plasma discharges has been analysed. From this analysis, the transition power divided by the density, at constant magnetic field, appears to be a function of a single parameter measuring the neutrals' effect. This results suggest that there is a missing parameter linked to the neutrals in the power-threshold scaling laws.

Original language	English (US)
Pages (from-to)	717-720
Number of pages	4
Journal	Plasma Physics and Controlled Fusion
Volume	40
Issue number	5
DOIs	https://doi.org/10.1088/0741-3335/40/5/030
State	Published - 1998
Externally published	Yes

All Science Journal Classification (ASJC) codes

Nuclear Energy and Engineering
Condensed Matter Physics

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10.1088/0741-3335/40/5/030

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abstract = "To assess the effect of edge neutrals on the low-to-high confinement transition threshold, a broad range of plasma discharges has been analysed. From this analysis, the transition power divided by the density, at constant magnetic field, appears to be a function of a single parameter measuring the neutrals' effect. This results suggest that there is a missing parameter linked to the neutrals in the power-threshold scaling laws.",

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AU - Owen, L. W.

AU - Carreras, B. A.

AU - Maingi, R.

AU - Mioduszewski, P. K.

AU - Carlstrom, T. N.

AU - Groebner, R. J.

PY - 1998

Y1 - 1998

N2 - To assess the effect of edge neutrals on the low-to-high confinement transition threshold, a broad range of plasma discharges has been analysed. From this analysis, the transition power divided by the density, at constant magnetic field, appears to be a function of a single parameter measuring the neutrals' effect. This results suggest that there is a missing parameter linked to the neutrals in the power-threshold scaling laws.

AB - To assess the effect of edge neutrals on the low-to-high confinement transition threshold, a broad range of plasma discharges has been analysed. From this analysis, the transition power divided by the density, at constant magnetic field, appears to be a function of a single parameter measuring the neutrals' effect. This results suggest that there is a missing parameter linked to the neutrals in the power-threshold scaling laws.

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IS - 5

ER -

Assessment of effects of neutrals on the power threshold for L-H transitions in DIII-D

Abstract

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