Spatially resolved measurements of fully ionized low-z impurities in the PDX tokamak

R. J. Fonck; M. Finkenthal; Robert James Goldston; D. L. Herndon; R. A. Hulse; R. Kaita; D. D. Meyerhofer

doi:10.1103/PhysRevLett.49.737

Spatially resolved measurements of fully ionized low-z impurities in the PDX tokamak

R. J. Fonck, M. Finkenthal, Robert James Goldston, D. L. Herndon, R. A. Hulse, R. Kaita, D. D. Meyerhofer

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Abstract

Fully ionized oxygen and carbon in PDX plasmas are detected via charge-exchange recombination reactions between the impurities and hydrogen atoms from a low-power neutral beam. The C6+ and O8+ ions are observed out to radii beyond the limiter, which is in contrast to expectations based on coronal equilibrium but consistent with a simple diffusive transport model. Central values of Zeff obtained with these measurements agree with values obtained from plasma resistivity and visible bremsstrahlung measurements.

Original language	English (US)
Pages (from-to)	737-740
Number of pages	4
Journal	Physical review letters
Volume	49
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevLett.49.737
State	Published - 1982

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevLett.49.737

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abstract = "Fully ionized oxygen and carbon in PDX plasmas are detected via charge-exchange recombination reactions between the impurities and hydrogen atoms from a low-power neutral beam. The C6+ and O8+ ions are observed out to radii beyond the limiter, which is in contrast to expectations based on coronal equilibrium but consistent with a simple diffusive transport model. Central values of Zeff obtained with these measurements agree with values obtained from plasma resistivity and visible bremsstrahlung measurements.",

author = "Fonck, {R. J.} and M. Finkenthal and Goldston, {Robert James} and Herndon, {D. L.} and Hulse, {R. A.} and R. Kaita and Meyerhofer, {D. D.}",

year = "1982",

doi = "10.1103/PhysRevLett.49.737",

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T1 - Spatially resolved measurements of fully ionized low-z impurities in the PDX tokamak

AU - Fonck, R. J.

AU - Finkenthal, M.

AU - Goldston, Robert James

AU - Herndon, D. L.

AU - Hulse, R. A.

AU - Kaita, R.

AU - Meyerhofer, D. D.

PY - 1982

Y1 - 1982

N2 - Fully ionized oxygen and carbon in PDX plasmas are detected via charge-exchange recombination reactions between the impurities and hydrogen atoms from a low-power neutral beam. The C6+ and O8+ ions are observed out to radii beyond the limiter, which is in contrast to expectations based on coronal equilibrium but consistent with a simple diffusive transport model. Central values of Zeff obtained with these measurements agree with values obtained from plasma resistivity and visible bremsstrahlung measurements.

AB - Fully ionized oxygen and carbon in PDX plasmas are detected via charge-exchange recombination reactions between the impurities and hydrogen atoms from a low-power neutral beam. The C6+ and O8+ ions are observed out to radii beyond the limiter, which is in contrast to expectations based on coronal equilibrium but consistent with a simple diffusive transport model. Central values of Zeff obtained with these measurements agree with values obtained from plasma resistivity and visible bremsstrahlung measurements.

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JO - Physical review letters

JF - Physical review letters

IS - 10

ER -

Spatially resolved measurements of fully ionized low-z impurities in the PDX tokamak

Abstract

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