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Wavelengths and energy levels of doubly ionized uranium (UIII) obtained using a Fourier-transform spectrometer

Journal Article · · J. Opt. Soc. Am. B: Opt. Phys.; (United States)
;
The term analysis of complex doubly ionized spectra is made more difficult by the large number of neutral and singly ionized lines that accompany the desired spectra as well as the lack of precision in wavelengths and intensities obtained from conventional spectrographs. To overcome these difficulties, we used a Fourier-transform spectrometer to obtain the spectra of uranium in a hollow cathode filled with a helium-argon mixture or neon. The separation of ion stages was based on the intensity variatiion of the doubly ionized lines between the two spectra. The wavelength accuracy permitted the first reported determination of energy levels in doubly ionized uranium. We report 22 low-lying odd levels and 36 high-lying even levels. The Fourier-transform spectrometer is a useful and appropriate instrument for starting the analysis of complex ionized spectra because of its wavelength and intensity accuracy.
Research Organization:
Chemistry Divison, Los Alamos National Laboratory, Los Alamos, New Mexico 87545
DOE Contract Number:
W-7405-ENG-36
OSTI ID:
6045902
Journal Information:
J. Opt. Soc. Am. B: Opt. Phys.; (United States), Journal Name: J. Opt. Soc. Am. B: Opt. Phys.; (United States) Vol. 1:4; ISSN JOBPD
Country of Publication:
United States
Language:
English

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Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ACCURACY
AMPLIFICATION
ARGON
CATHODES
CHARGED PARTICLES
DATA
DATA PROCESSING
ELECTRODES
ELEMENTS
EMISSION SPECTRA
ENERGY LEVELS
ENERGY RESOLUTION
EXPERIMENTAL DATA
FLUIDS
FOURIER TRANSFORM SPECTROMETERS
GASES
HELIUM
HOLLOW CATHODES
INFORMATION
IONS
LINE WIDTHS
MEASURING INSTRUMENTS
MODIFICATIONS
NEON
NONMETALS
NUMERICAL DATA
PROCESSING
RARE GASES
RESOLUTION
SPATIAL RESOLUTION
SPECTRA
SPECTROMETERS
URANIUM IONS
USES
WAVELENGTHS