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 languageEnglish (US)
Pages (from-to)737-740
Number of pages4
JournalPhysical review letters
Volume49
Issue number10
DOIs
StatePublished - Jan 1 1982

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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    Fonck, R. J., Finkenthal, M., Goldston, R. J., Herndon, D. L., Hulse, R. A., Kaita, R., & Meyerhofer, D. D. (1982). Spatially resolved measurements of fully ionized low-z impurities in the PDX tokamak. Physical review letters, 49(10), 737-740. https://doi.org/10.1103/PhysRevLett.49.737