Measurements of the electron source distribution and particle transport coefficients in JET

J. O’Rourke; C. Gowers; G. J. Kramertj; P. D. Morgan; R. Simonini; A. C.C. Sips

doi:10.1088/0741-3335/35/5/004

Measurements of the electron source distribution and particle transport coefficients in JET

J. O’Rourke, C. Gowers, G. J. Kramertj, P. D. Morgan, R. Simonini, A. C.C. Sips

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

24 Scopus citations

Abstract

Reflectometer measurements of electron density perturbations produced by modulation of the gas feed are used to measure the electron source distribution and benchmark Monte Carlo neutral transport calculations. The penetration depth of the source is less than 5% of the plasma radius in medium density plasmas ((n_e) approximately 2×10¹⁹ m^-3). An analysis of the temporal evolution of the electron flux calculated using the measured source yields the diffusion coefficient, D_e, and the pinch velocity, V_p. The radial profiles and parametric dependences of these particle transport coefficients are studied in Ohmic and L-mode regimes.

Original language	English (US)
Pages (from-to)	585-594
Number of pages	10
Journal	Plasma Physics and Controlled Fusion
Volume	35
Issue number	5
DOIs	https://doi.org/10.1088/0741-3335/35/5/004
State	Published - May 1993
Externally published	Yes

All Science Journal Classification (ASJC) codes

Nuclear Energy and Engineering
Condensed Matter Physics

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title = "Measurements of the electron source distribution and particle transport coefficients in JET",

abstract = "Reflectometer measurements of electron density perturbations produced by modulation of the gas feed are used to measure the electron source distribution and benchmark Monte Carlo neutral transport calculations. The penetration depth of the source is less than 5\% of the plasma radius in medium density plasmas ((ne) approximately 2×1019 m-3). An analysis of the temporal evolution of the electron flux calculated using the measured source yields the diffusion coefficient, De, and the pinch velocity, Vp. The radial profiles and parametric dependences of these particle transport coefficients are studied in Ohmic and L-mode regimes.",

author = "J. O{\textquoteright}Rourke and C. Gowers and Kramertj, \{G. J.\} and Morgan, \{P. D.\} and R. Simonini and Sips, \{A. C.C.\}",

year = "1993",

month = may,

doi = "10.1088/0741-3335/35/5/004",

language = "English (US)",

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T1 - Measurements of the electron source distribution and particle transport coefficients in JET

AU - O’Rourke, J.

AU - Gowers, C.

AU - Kramertj, G. J.

AU - Morgan, P. D.

AU - Simonini, R.

AU - Sips, A. C.C.

PY - 1993/5

Y1 - 1993/5

N2 - Reflectometer measurements of electron density perturbations produced by modulation of the gas feed are used to measure the electron source distribution and benchmark Monte Carlo neutral transport calculations. The penetration depth of the source is less than 5% of the plasma radius in medium density plasmas ((ne) approximately 2×1019 m-3). An analysis of the temporal evolution of the electron flux calculated using the measured source yields the diffusion coefficient, De, and the pinch velocity, Vp. The radial profiles and parametric dependences of these particle transport coefficients are studied in Ohmic and L-mode regimes.

AB - Reflectometer measurements of electron density perturbations produced by modulation of the gas feed are used to measure the electron source distribution and benchmark Monte Carlo neutral transport calculations. The penetration depth of the source is less than 5% of the plasma radius in medium density plasmas ((ne) approximately 2×1019 m-3). An analysis of the temporal evolution of the electron flux calculated using the measured source yields the diffusion coefficient, De, and the pinch velocity, Vp. The radial profiles and parametric dependences of these particle transport coefficients are studied in Ohmic and L-mode regimes.

UR - https://www.scopus.com/pages/publications/0343348750

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AN - SCOPUS:0343348750

SN - 0741-3335

VL - 35

SP - 585

EP - 594

JO - Plasma Physics and Controlled Fusion

JF - Plasma Physics and Controlled Fusion

IS - 5

ER -

Measurements of the electron source distribution and particle transport coefficients in JET

Abstract

All Science Journal Classification (ASJC) codes

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