Observation of z-dependent impurity accumulation in the PBX tokamak

K. Ida; R. J. Fonck; S. Sesnic; R. A. Hulse; B. LeBlanc

doi:10.1103/PhysRevLett.58.116

Observation of z-dependent impurity accumulation in the PBX tokamak

K. Ida, R. J. Fonck, S. Sesnic, R. A. Hulse, B. LeBlanc

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Abstract

Charge-dependent convective impurity transport is observed in the central core of PBX H-mode discharges by measurement of radial profiles for both low- and high-Z intrinsic impurities in the presence of strong sawtooth activity. The time-evolving Zeff profile and central metallic densities are modeled to yield a diffuison coefficient and a Z-dependent inward convective pinch which are in general agreement with estimates of neoclassical transport in the central plasma region.

Original language	English (US)
Pages (from-to)	116-119
Number of pages	4
Journal	Physical review letters
Volume	58
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevLett.58.116
State	Published - 1987

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevLett.58.116

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abstract = "Charge-dependent convective impurity transport is observed in the central core of PBX H-mode discharges by measurement of radial profiles for both low- and high-Z intrinsic impurities in the presence of strong sawtooth activity. The time-evolving Zeff profile and central metallic densities are modeled to yield a diffuison coefficient and a Z-dependent inward convective pinch which are in general agreement with estimates of neoclassical transport in the central plasma region.",

author = "K. Ida and Fonck, \{R. J.\} and S. Sesnic and Hulse, \{R. A.\} and B. LeBlanc",

year = "1987",

doi = "10.1103/PhysRevLett.58.116",

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pages = "116--119",

journal = "Physical review letters",

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T1 - Observation of z-dependent impurity accumulation in the PBX tokamak

AU - Ida, K.

AU - Fonck, R. J.

AU - Sesnic, S.

AU - Hulse, R. A.

AU - LeBlanc, B.

PY - 1987

Y1 - 1987

N2 - Charge-dependent convective impurity transport is observed in the central core of PBX H-mode discharges by measurement of radial profiles for both low- and high-Z intrinsic impurities in the presence of strong sawtooth activity. The time-evolving Zeff profile and central metallic densities are modeled to yield a diffuison coefficient and a Z-dependent inward convective pinch which are in general agreement with estimates of neoclassical transport in the central plasma region.

AB - Charge-dependent convective impurity transport is observed in the central core of PBX H-mode discharges by measurement of radial profiles for both low- and high-Z intrinsic impurities in the presence of strong sawtooth activity. The time-evolving Zeff profile and central metallic densities are modeled to yield a diffuison coefficient and a Z-dependent inward convective pinch which are in general agreement with estimates of neoclassical transport in the central plasma region.

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U2 - 10.1103/PhysRevLett.58.116

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ER -

Observation of z-dependent impurity accumulation in the PBX tokamak

Abstract

All Science Journal Classification (ASJC) codes

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