Blob structure and motion in the edge and SOL of NSTX

S. J. Zweben; J. R. Myra; W. M. Davis; D. A. D'Ippolito; T. K. Gray; S. M. Kaye; B. P. Leblanc; R. J. Maqueda; D. A. Russell; D. P. Stotler

doi:10.1088/0741-3335/58/4/044007

Blob structure and motion in the edge and SOL of NSTX

S. J. Zweben, J. R. Myra, W. M. Davis, D. A. D'Ippolito, T. K. Gray, S. M. Kaye, B. P. Leblanc, R. J. Maqueda, D. A. Russell, D. P. Stotler

PPPL NSTX

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86 Scopus citations

Abstract

The structure and motion of discrete plasma blobs (a.k.a. filaments) in the edge and scrape-off layer of NSTX is studied for representative Ohmic and H-mode discharges. Individual blobs were tracked in the 2D radial versus poloidal plane using data from the gas puff imaging diagnostic taken at 400 000 frames s^-1. A database of blob amplitude, size, ellipticity, tilt, and velocity was obtained for ∼45 000 individual blobs. Empirical relationships between various properties are described, e.g. blob speed versus amplitude and blob tilt versus ellipticity. The blob velocities are also compared with analytic models.

Original language	English (US)
Article number	044007
Journal	Plasma Physics and Controlled Fusion
Volume	58
Issue number	4
DOIs	https://doi.org/10.1088/0741-3335/58/4/044007
State	Published - Jan 28 2016

All Science Journal Classification (ASJC) codes

Nuclear Energy and Engineering
Condensed Matter Physics

Keywords

edge
tokamak
turbulence

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10.1088/0741-3335/58/4/044007

Cite this

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title = "Blob structure and motion in the edge and SOL of NSTX",

abstract = "The structure and motion of discrete plasma blobs (a.k.a. filaments) in the edge and scrape-off layer of NSTX is studied for representative Ohmic and H-mode discharges. Individual blobs were tracked in the 2D radial versus poloidal plane using data from the gas puff imaging diagnostic taken at 400 000 frames s-1. A database of blob amplitude, size, ellipticity, tilt, and velocity was obtained for ∼45 000 individual blobs. Empirical relationships between various properties are described, e.g. blob speed versus amplitude and blob tilt versus ellipticity. The blob velocities are also compared with analytic models.",

keywords = "edge, tokamak, turbulence",

author = "Zweben, \{S. J.\} and Myra, \{J. R.\} and Davis, \{W. M.\} and D'Ippolito, \{D. A.\} and Gray, \{T. K.\} and Kaye, \{S. M.\} and Leblanc, \{B. P.\} and Maqueda, \{R. J.\} and Russell, \{D. A.\} and Stotler, \{D. P.\}",

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doi = "10.1088/0741-3335/58/4/044007",

language = "English (US)",

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T1 - Blob structure and motion in the edge and SOL of NSTX

AU - Zweben, S. J.

AU - Myra, J. R.

AU - Davis, W. M.

AU - D'Ippolito, D. A.

AU - Gray, T. K.

AU - Kaye, S. M.

AU - Leblanc, B. P.

AU - Maqueda, R. J.

AU - Russell, D. A.

AU - Stotler, D. P.

PY - 2016/1/28

Y1 - 2016/1/28

N2 - The structure and motion of discrete plasma blobs (a.k.a. filaments) in the edge and scrape-off layer of NSTX is studied for representative Ohmic and H-mode discharges. Individual blobs were tracked in the 2D radial versus poloidal plane using data from the gas puff imaging diagnostic taken at 400 000 frames s-1. A database of blob amplitude, size, ellipticity, tilt, and velocity was obtained for ∼45 000 individual blobs. Empirical relationships between various properties are described, e.g. blob speed versus amplitude and blob tilt versus ellipticity. The blob velocities are also compared with analytic models.

AB - The structure and motion of discrete plasma blobs (a.k.a. filaments) in the edge and scrape-off layer of NSTX is studied for representative Ohmic and H-mode discharges. Individual blobs were tracked in the 2D radial versus poloidal plane using data from the gas puff imaging diagnostic taken at 400 000 frames s-1. A database of blob amplitude, size, ellipticity, tilt, and velocity was obtained for ∼45 000 individual blobs. Empirical relationships between various properties are described, e.g. blob speed versus amplitude and blob tilt versus ellipticity. The blob velocities are also compared with analytic models.

KW - edge

KW - tokamak

KW - turbulence

UR - https://www.scopus.com/pages/publications/84961683884

UR - https://www.scopus.com/inward/citedby.url?scp=84961683884&partnerID=8YFLogxK

U2 - 10.1088/0741-3335/58/4/044007

DO - 10.1088/0741-3335/58/4/044007

M3 - Article

AN - SCOPUS:84961683884

SN - 0741-3335

VL - 58

JO - Plasma Physics and Controlled Fusion

JF - Plasma Physics and Controlled Fusion

IS - 4

M1 - 044007

ER -

Blob structure and motion in the edge and SOL of NSTX

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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