Formation of 238U16O and 238U18O observed by time-resolved emission spectroscopy subsequent to laser ablation
| Autor: | Batikan Koroglu, Brett H. Isselhardt, Davide Curreli, Magdi Naim Azer, Jonathan C. Crowhurst, Michael R. Savina, Mikhail Finko, Joseph M. Zaug, Wigbert J. Siekhaus, Michael R. Armstrong, Timothy P. Rose, Harry B. Radousky, David Weisz |
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| Rok vydání: | 2017 |
| Předmět: |
Laser ablation
Argon Physics and Astronomy (miscellaneous) Chemistry 010401 analytical chemistry Oxide chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology Laser 01 natural sciences 0104 chemical sciences law.invention chemistry.chemical_compound law Emission spectrum Physics::Chemical Physics Atomic physics 0210 nano-technology Luminescence Spectroscopy Excitation |
| Zdroj: | Applied Physics Letters. 111:034101 |
| ISSN: | 1077-3118 0003-6951 |
| DOI: | 10.1063/1.4991824 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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