Abstract

X-ray spectra in the wavelength range from 2.70 to 2.76 Å from xenon (Z = 54) in near neon-like charge states have been observed in Alcator C-Mod tokamak plasmas. The 3D (2p6 − (2p5)3/23d5/2, 2720.4 mÅ) and 3F (2p6 − (2p5)1/23s1/2, 2729.0 mÅ) transitions from neon-like Xe44+ have been identified, along with nearby Na-, Mg- and Al-like satellites. The intensity ratio of 3D to the Mg-like satellite near 2.74 Å increases strongly with electron temperature in the range from 3 to 4 keV.

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