Radial structure of alfvén eigenmodes in the DIII-D tokamak through electron-cyclotron-emission measurements

M. A. Van Zeeland; G. J. Kramer; M. E. Austin; R. L. Boivin; W. W. Heidbrink; M. A. Makowski; G. R. McKee; R. Nazikian; W. M. Solomon; G. Wang

doi:10.1103/PhysRevLett.97.135001

Radial structure of alfvén eigenmodes in the DIII-D tokamak through electron-cyclotron-emission measurements

M. A. Van Zeeland
, G. J. Kramer
, M. E. Austin
, R. L. Boivin
, W. W. Heidbrink
, M. A. Makowski
, G. R. McKee
, R. Nazikian
, W. M. Solomon
, G. Wang

PPPL Tokamak Expermntl Science

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

151 Scopus citations

Abstract

The spatial structure of toroidal Alfvén eigenmodes and reversed shear Alfvén eigenmodes in DIII-D is obtained from electron-cyclotron-emission measurements. Peak measured temperature perturbations are of similar magnitude for both toroidal Alfvén eigenmodes and reversed shear Alfvén eigenmodes and found to be δTe/Te 0.5%. Simultaneous measurements of density fluctuations using beam-emission spectroscopy indicate δne/ne 0.25%. Predictions of the measured temperature and density perturbation profiles as well as δTe/δne from the ideal magnetohydrodynamic code NOVA are in close agreement with experiment.

Original language	English (US)
Article number	135001
Journal	Physical review letters
Volume	97
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevLett.97.135001
State	Published - 2006

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevLett.97.135001

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title = "Radial structure of alfv{\'e}n eigenmodes in the DIII-D tokamak through electron-cyclotron-emission measurements",

abstract = "The spatial structure of toroidal Alfv{\'e}n eigenmodes and reversed shear Alfv{\'e}n eigenmodes in DIII-D is obtained from electron-cyclotron-emission measurements. Peak measured temperature perturbations are of similar magnitude for both toroidal Alfv{\'e}n eigenmodes and reversed shear Alfv{\'e}n eigenmodes and found to be δTe/Te 0.5\%. Simultaneous measurements of density fluctuations using beam-emission spectroscopy indicate δne/ne 0.25\%. Predictions of the measured temperature and density perturbation profiles as well as δTe/δne from the ideal magnetohydrodynamic code NOVA are in close agreement with experiment.",

author = "\{Van Zeeland\}, \{M. A.\} and Kramer, \{G. J.\} and Austin, \{M. E.\} and Boivin, \{R. L.\} and Heidbrink, \{W. W.\} and Makowski, \{M. A.\} and McKee, \{G. R.\} and R. Nazikian and Solomon, \{W. M.\} and G. Wang",

year = "2006",

doi = "10.1103/PhysRevLett.97.135001",

language = "English (US)",

volume = "97",

journal = "Physical review letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "13",

}

TY - JOUR

T1 - Radial structure of alfvén eigenmodes in the DIII-D tokamak through electron-cyclotron-emission measurements

AU - Van Zeeland, M. A.

AU - Kramer, G. J.

AU - Austin, M. E.

AU - Boivin, R. L.

AU - Heidbrink, W. W.

AU - Makowski, M. A.

AU - McKee, G. R.

AU - Nazikian, R.

AU - Solomon, W. M.

AU - Wang, G.

PY - 2006

Y1 - 2006

N2 - The spatial structure of toroidal Alfvén eigenmodes and reversed shear Alfvén eigenmodes in DIII-D is obtained from electron-cyclotron-emission measurements. Peak measured temperature perturbations are of similar magnitude for both toroidal Alfvén eigenmodes and reversed shear Alfvén eigenmodes and found to be δTe/Te 0.5%. Simultaneous measurements of density fluctuations using beam-emission spectroscopy indicate δne/ne 0.25%. Predictions of the measured temperature and density perturbation profiles as well as δTe/δne from the ideal magnetohydrodynamic code NOVA are in close agreement with experiment.

AB - The spatial structure of toroidal Alfvén eigenmodes and reversed shear Alfvén eigenmodes in DIII-D is obtained from electron-cyclotron-emission measurements. Peak measured temperature perturbations are of similar magnitude for both toroidal Alfvén eigenmodes and reversed shear Alfvén eigenmodes and found to be δTe/Te 0.5%. Simultaneous measurements of density fluctuations using beam-emission spectroscopy indicate δne/ne 0.25%. Predictions of the measured temperature and density perturbation profiles as well as δTe/δne from the ideal magnetohydrodynamic code NOVA are in close agreement with experiment.

UR - https://www.scopus.com/pages/publications/33749019439

UR - https://www.scopus.com/pages/publications/33749019439#tab=citedBy

U2 - 10.1103/PhysRevLett.97.135001

DO - 10.1103/PhysRevLett.97.135001

M3 - Article

C2 - 17026039

AN - SCOPUS:33749019439

SN - 0031-9007

VL - 97

JO - Physical review letters

JF - Physical review letters

IS - 13

M1 - 135001

ER -

Radial structure of alfvén eigenmodes in the DIII-D tokamak through electron-cyclotron-emission measurements

Abstract

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