Improved high-confinement mode with neon injection in the DIII-D tokamak

G. M. Staebler; G. L. Jackson; W. P. West; S. L. Allen; R. J. Groebner; M. J. Schaffer; D. G. Whyte

doi:10.1103/PhysRevLett.82.1692

Improved high-confinement mode with neon injection in the DIII-D tokamak

G. M. Staebler
, G. L. Jackson
, W. P. West
, S. L. Allen
, R. J. Groebner
, M. J. Schaffer
, D. G. Whyte

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

35 Scopus citations

Abstract

The first observation of a high-confinement mode with reduced energy transport in both the center and the edge induced by the injection of neon impurities is reported in this paper. This improved high mode develops from an improved low-confinement mode. Linear growth rate calculations indicate that a new theoretical mechanism, the stabilization of high wave number drift waves by impurities, is at work, combined with E × B velocity shear suppression of low wave number instabilities.

Original language	English
Pages (from-to)	1692-1695
Number of pages	4
Journal	Physical Review Letters
Volume	82
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevLett.82.1692
State	Published - 1999
Externally published	Yes

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10.1103/PhysRevLett.82.1692

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title = "Improved high-confinement mode with neon injection in the DIII-D tokamak",

abstract = "The first observation of a high-confinement mode with reduced energy transport in both the center and the edge induced by the injection of neon impurities is reported in this paper. This improved high mode develops from an improved low-confinement mode. Linear growth rate calculations indicate that a new theoretical mechanism, the stabilization of high wave number drift waves by impurities, is at work, combined with E {\texttimes} B velocity shear suppression of low wave number instabilities.",

author = "Staebler, \{G. M.\} and Jackson, \{G. L.\} and West, \{W. P.\} and Allen, \{S. L.\} and Groebner, \{R. J.\} and Schaffer, \{M. J.\} and Whyte, \{D. G.\}",

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AU - Staebler, G. M.

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AU - Allen, S. L.

AU - Groebner, R. J.

AU - Schaffer, M. J.

AU - Whyte, D. G.

PY - 1999

Y1 - 1999

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AB - The first observation of a high-confinement mode with reduced energy transport in both the center and the edge induced by the injection of neon impurities is reported in this paper. This improved high mode develops from an improved low-confinement mode. Linear growth rate calculations indicate that a new theoretical mechanism, the stabilization of high wave number drift waves by impurities, is at work, combined with E × B velocity shear suppression of low wave number instabilities.

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DO - 10.1103/PhysRevLett.82.1692

M3 - Article

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Improved high-confinement mode with neon injection in the DIII-D tokamak

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