| Autor: |
Diaz D; Department of Mechanical and Aerospace Engineering, College of Engineering, University of Arizona, Tucson, AZ, USA., Hahn DW; Department of Mechanical and Aerospace Engineering, College of Engineering, University of Arizona, Tucson, AZ, USA. |
| Jazyk: |
angličtina |
| Zdroj: |
Applied spectroscopy [Appl Spectrosc] 2023 Sep; Vol. 77 (9), pp. 1033-1043. Date of Electronic Publication: 2023 Jul 11. |
| DOI: |
10.1177/00037028231184911 |
| Abstrakt: |
The detection of off-gassed sodium from molten sodium nitrate (NaNO 3 ) at temperatures between 330 °C and 505 °C and off-gassed calcium from molten lithium chloride-potassium chloride eutectic (LKE) mixtures at 510 °C with laser-induced breakdown spectroscopy (LIBS) was demonstrated. NaNO 3 and LKE samples were melted in a custom-built crucible that promoted the generation of off-gassed products from the molten sample. The off-gassed products were analyzed with a LIBS system designed to probe the high-temperature environment. Na D emission lines, Na(I)588.99 nm and Na(I) 589.59 nm, were detected from the NaNO 3 samples after reaching a temperature threshold, which indicated the occurrence of phase change. In LKE mixtures, the detection of Ca impurities at a concentration of 78 mg/kg was possible using the emission lines Ca(II) 393.66 nm and Ca(II) 395.85 nm. This work demonstrates the real-time monitoring capabilities of LIBS in high-temperature environments that simulate the conditions of molten salt reactors. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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