Measurements of radial profiles of He2+ transport coefficients on the TFTR tokamak

E. J. Synakowski; B. C. Stratton; P. C. Efthimion; R. J. Fonck; R. A. Hulse; D. W. Johnson; D. K. Mansfield; H. Park; S. D. Scott; G. Taylor

doi:10.1103/PhysRevLett.65.2255

Measurements of radial profiles of He2+ transport coefficients on the TFTR tokamak

E. J. Synakowski
, B. C. Stratton
, P. C. Efthimion
, R. J. Fonck
, R. A. Hulse
, D. W. Johnson
, D. K. Mansfield
, H. Park
, S. D. Scott
, G. Taylor

Department of Physics

Princeton Plasma Physics Laboratory

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

58 Scopus citations

Abstract

Measurements of the spatial structure of the transport coefficients of He2+ on the Tokamak Fusion Test Reactor is reported. He2+ profiles were measured using charge-exchange spectroscopy after a helium puff into corotating L-mode plasmas. Modeling shows that the He2+ diffusivity is about 10 m2/s near the plasma edge and drops to below 1 m2/s inside of the q=1 surface. The convective velocity ranges from 13 m/s near q=1 to 2040 m/s near the edge. The helium diffusivity is on the order of the ion momentum and thermal diffusivity and is greater than the electron thermal diffusivity.

Original language	English
Pages (from-to)	2255-2258
Number of pages	4
Journal	Physical Review Letters
Volume	65
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevLett.65.2255
State	Published - 1990

Access to Document

10.1103/PhysRevLett.65.2255

Cite this

@article{d04df898cbb94cf7887701e12aebad37,

title = "Measurements of radial profiles of He2+ transport coefficients on the TFTR tokamak",

abstract = "Measurements of the spatial structure of the transport coefficients of He2+ on the Tokamak Fusion Test Reactor is reported. He2+ profiles were measured using charge-exchange spectroscopy after a helium puff into corotating L-mode plasmas. Modeling shows that the He2+ diffusivity is about 10 m2/s near the plasma edge and drops to below 1 m2/s inside of the q=1 surface. The convective velocity ranges from 13 m/s near q=1 to 2040 m/s near the edge. The helium diffusivity is on the order of the ion momentum and thermal diffusivity and is greater than the electron thermal diffusivity.",

author = "Synakowski, \{E. J.\} and Stratton, \{B. C.\} and Efthimion, \{P. C.\} and Fonck, \{R. J.\} and Hulse, \{R. A.\} and Johnson, \{D. W.\} and Mansfield, \{D. K.\} and H. Park and Scott, \{S. D.\} and G. Taylor",

year = "1990",

doi = "10.1103/PhysRevLett.65.2255",

language = "English",

volume = "65",

pages = "2255--2258",

number = "18",

}

TY - JOUR

T1 - Measurements of radial profiles of He2+ transport coefficients on the TFTR tokamak

AU - Synakowski, E. J.

AU - Stratton, B. C.

AU - Efthimion, P. C.

AU - Fonck, R. J.

AU - Hulse, R. A.

AU - Johnson, D. W.

AU - Mansfield, D. K.

AU - Park, H.

AU - Scott, S. D.

AU - Taylor, G.

PY - 1990

Y1 - 1990

N2 - Measurements of the spatial structure of the transport coefficients of He2+ on the Tokamak Fusion Test Reactor is reported. He2+ profiles were measured using charge-exchange spectroscopy after a helium puff into corotating L-mode plasmas. Modeling shows that the He2+ diffusivity is about 10 m2/s near the plasma edge and drops to below 1 m2/s inside of the q=1 surface. The convective velocity ranges from 13 m/s near q=1 to 2040 m/s near the edge. The helium diffusivity is on the order of the ion momentum and thermal diffusivity and is greater than the electron thermal diffusivity.

AB - Measurements of the spatial structure of the transport coefficients of He2+ on the Tokamak Fusion Test Reactor is reported. He2+ profiles were measured using charge-exchange spectroscopy after a helium puff into corotating L-mode plasmas. Modeling shows that the He2+ diffusivity is about 10 m2/s near the plasma edge and drops to below 1 m2/s inside of the q=1 surface. The convective velocity ranges from 13 m/s near q=1 to 2040 m/s near the edge. The helium diffusivity is on the order of the ion momentum and thermal diffusivity and is greater than the electron thermal diffusivity.

UR - https://www.scopus.com/pages/publications/3343018570

UR - https://www.scopus.com/pages/publications/3343018570#tab=citedBy

U2 - 10.1103/PhysRevLett.65.2255

DO - 10.1103/PhysRevLett.65.2255

M3 - Article

AN - SCOPUS:3343018570

SN - 0031-9007

VL - 65

SP - 2255

EP - 2258

JO - Physical Review Letters

JF - Physical Review Letters

IS - 18

ER -

Measurements of radial profiles of He2+ transport coefficients on the TFTR tokamak

Abstract

Access to Document

Other files and links

Fingerprint

Cite this