Abstract

Spectra in the 30 to 80 A wavelength region of tungsten and gold ions, with charge states ranging from 20 to 33, and 25 to 38, respectively, have been measured in beam-foil excitation and compared with similar spectra from tokamak-produced plasmas. Several common features are observed. Assignment of observed features to particular states of ionization can be made with greater assurance for the beam foil spectra than for the tokamak spectra due to superior control and predictability of the ion charge states in the beam-foil experiment.

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