Slow L-H transitions in DIII-D plasmas

R. J. Colchin; M. J. Schaffer; B. A. Carreras; G. R. McKee; R. Maingi; T. N. Carlstrom; D. L. Rudakov; C. M. Greenfield; T. L. Rhodes; E. J. Doyle; N. H. Brooks; M. E. Austin

Slow L-H transitions in DIII-D plasmas

R. J. Colchin, M. J. Schaffer, B. A. Carreras, G. R. McKee, R. Maingi, T. N. Carlstrom, D. L. Rudakov, C. M. Greenfield, T. L. Rhodes, E. J. Doyle, N. H. Brooks, M. E. Austin

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60 Scopus citations

Abstract

The transitions from the low to the high mode of plasma confinement were studied in a fusion reaction by an experimental technique, which allows an arbitrary slow transition. The periodic turbulent instability bursts were observed near the separatrix, which inhibited the full transitions. The periodic turbulent instability bursts were damped by self generated shear flows and a predator-prey-type relationship was shown to give a good description of the data. The oscillations change to type III edge localized modes as the neutral-beam powder was raised.

Original language	English
Article number	255002
Pages (from-to)	2550021-2550024
Number of pages	4
Journal	Physical Review Letters
Volume	88
Issue number	25 I
State	Published - Jun 24 2002
Externally published	Yes

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Cite this

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title = "Slow L-H transitions in DIII-D plasmas",

abstract = "The transitions from the low to the high mode of plasma confinement were studied in a fusion reaction by an experimental technique, which allows an arbitrary slow transition. The periodic turbulent instability bursts were observed near the separatrix, which inhibited the full transitions. The periodic turbulent instability bursts were damped by self generated shear flows and a predator-prey-type relationship was shown to give a good description of the data. The oscillations change to type III edge localized modes as the neutral-beam powder was raised.",

author = "Colchin, {R. J.} and Schaffer, {M. J.} and Carreras, {B. A.} and McKee, {G. R.} and R. Maingi and Carlstrom, {T. N.} and Rudakov, {D. L.} and Greenfield, {C. M.} and Rhodes, {T. L.} and Doyle, {E. J.} and Brooks, {N. H.} and Austin, {M. E.}",

year = "2002",

month = jun,

day = "24",

language = "English",

volume = "88",

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T1 - Slow L-H transitions in DIII-D plasmas

AU - Colchin, R. J.

AU - Schaffer, M. J.

AU - Carreras, B. A.

AU - McKee, G. R.

AU - Maingi, R.

AU - Carlstrom, T. N.

AU - Rudakov, D. L.

AU - Greenfield, C. M.

AU - Rhodes, T. L.

AU - Doyle, E. J.

AU - Brooks, N. H.

AU - Austin, M. E.

PY - 2002/6/24

Y1 - 2002/6/24

N2 - The transitions from the low to the high mode of plasma confinement were studied in a fusion reaction by an experimental technique, which allows an arbitrary slow transition. The periodic turbulent instability bursts were observed near the separatrix, which inhibited the full transitions. The periodic turbulent instability bursts were damped by self generated shear flows and a predator-prey-type relationship was shown to give a good description of the data. The oscillations change to type III edge localized modes as the neutral-beam powder was raised.

AB - The transitions from the low to the high mode of plasma confinement were studied in a fusion reaction by an experimental technique, which allows an arbitrary slow transition. The periodic turbulent instability bursts were observed near the separatrix, which inhibited the full transitions. The periodic turbulent instability bursts were damped by self generated shear flows and a predator-prey-type relationship was shown to give a good description of the data. The oscillations change to type III edge localized modes as the neutral-beam powder was raised.

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M3 - Article

AN - SCOPUS:0037166869

SN - 0031-9007

VL - 88

SP - 2550021

EP - 2550024

JO - Physical Review Letters

JF - Physical Review Letters

IS - 25 I

M1 - 255002

ER -

Slow L-H transitions in DIII-D plasmas

Abstract

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