Abstract

Spectroscopic studies have been performed at TRW in a uranium-argon plasma using a fiber optics probe. On the basis of relative intensity as a function of distance from a uranium source, the lines were divided into four groups and assigned as U i, U ii, U iii, and U iv. The various charge species have different spatial dependences due to their formation, ionization, and transport rates. Confirmation of these assignments came from two separate experiments. The first was a spatial scan with a mass spectrometer probe in the same machine. The second was a time-resolved experiment on a sliding spark at Lawrence Berkeley Laboratory which showed that the lines assigned as U iii correlated with a lower charge species than the lines assigned as U iv.

© 1980 Optical Society of America

Resonance lines of Cs ii, Ba iii, and La iv

Joseph Reader and Gabriel L. Epstein
J. Opt. Soc. Am. 65(6) 638-641 (1975)

Resonance lines and energy levels of Cs iii, Ba iv, and La v

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Lifetime measurements in Ti iii, iv, and v using beam-foil spectroscopy

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Wavelengths of U III and U IV lines in the near ultraviolet

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Spectrum and energy levels of triply ionized zirconium (Zr iv)

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J. Opt. Soc. Am. 70(7) 789-792 (1980)