Armstrong, M. R. ; Azer, M. ; Crowhurst, J. C. ; Curreli, D. ; Finko, M. S. ; Isselhardt, B. H. ; Koroglu, B. ; Radousky, H. B. ; Rose, T. P. ; Savina, M. R. ; Siekhaus, W. J. ; Zaug, J. M.
INDUCED BREAKDOWN SPECTROSCOPY; MOLECULAR ISOTOPIC SPECTROMETRY; URANIUM MONOXIDE; INDUCED PLASMAS; SPECTRA; UO; COMPUTATION; STATES; ORE
We have measured vibronic emission spectra of an oxide of uranium formed after laser ablation of the metal in gaseous oxygen. Specifically, we have measured the time-dependent relative intensity of a band located at approximately 593.6 nm in O-16(2). This band grew in intensity relative to neighboring atomic features as a function time in an oxygen environment but was relatively invariant with time in argon. In addition, we have measured the spectral shift of this band in an O-18(2) atmosphere. Based on this shift, and by comparison with earlier results obtained from free-jet expansion and laser excitation, we can confirm that the oxide in question is UO, consistent with recent reports based on laser ablation in O-16(2) only. Published by AIP Publishing.