Formation of 238U16O and 238U18O observed by time-resolved emission spectroscopy subsequent to laser ablation

David G. Weisz; Jonathan C. Crowhurst; Wigbert J. Siekhaus; Timothy P. Rose; Batikan Koroglu; Harry B. Radousky; Joseph M. Zaug; Michael R. Armstrong; Brett H. Isselhardt; Michael R. Savina; Magdi Azer; Mikhail S. Finko; Davide Curreli

doi:10.1063/1.4991824

Formation of ²³⁸U¹⁶O and ²³⁸U¹⁸O observed by time-resolved emission spectroscopy subsequent to laser ablation

David G. Weisz, Jonathan C. Crowhurst, Wigbert J. Siekhaus, Timothy P. Rose, Batikan Koroglu, Harry B. Radousky, Joseph M. Zaug, Michael R. Armstrong, Brett H. Isselhardt, Michael R. Savina, Magdi Azer, Mikhail S. Finko, Davide Curreli

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Abstract

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 ¹⁶O₂. 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 ¹⁸O₂ 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 ¹⁶O₂ only.

Original language	English (US)
Article number	034101
Journal	Applied Physics Letters
Volume	111
Issue number	3
DOIs	https://doi.org/10.1063/1.4991824
State	Published - Jul 17 2017

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.4991824

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Weisz, D. G., Crowhurst, J. C., Siekhaus, W. J., Rose, T. P., Koroglu, B., Radousky, H. B., Zaug, J. M., Armstrong, M. R., Isselhardt, B. H., Savina, M. R., Azer, M., Finko, M. S., & Curreli, D. (2017). Formation of ²³⁸U¹⁶O and ²³⁸U¹⁸O observed by time-resolved emission spectroscopy subsequent to laser ablation. Applied Physics Letters, 111(3), Article 034101. https://doi.org/10.1063/1.4991824

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title = "Formation of 238U16O and 238U18O observed by time-resolved emission spectroscopy subsequent to laser ablation",

abstract = "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 16O2. 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 18O2 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 16O2 only.",

author = "Weisz, {David G.} and Crowhurst, {Jonathan C.} and Siekhaus, {Wigbert J.} and Rose, {Timothy P.} and Batikan Koroglu and Radousky, {Harry B.} and Zaug, {Joseph M.} and Armstrong, {Michael R.} and Isselhardt, {Brett H.} and Savina, {Michael R.} and Magdi Azer and Finko, {Mikhail S.} and Davide Curreli",

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doi = "10.1063/1.4991824",

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T1 - Formation of 238U16O and 238U18O observed by time-resolved emission spectroscopy subsequent to laser ablation

AU - Weisz, David G.

AU - Crowhurst, Jonathan C.

AU - Siekhaus, Wigbert J.

AU - Rose, Timothy P.

AU - Koroglu, Batikan

AU - Radousky, Harry B.

AU - Zaug, Joseph M.

AU - Armstrong, Michael R.

AU - Isselhardt, Brett H.

AU - Savina, Michael R.

AU - Azer, Magdi

AU - Finko, Mikhail S.

AU - Curreli, Davide

PY - 2017/7/17

Y1 - 2017/7/17

N2 - 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 16O2. 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 18O2 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 16O2 only.

AB - 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 16O2. 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 18O2 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 16O2 only.

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