High temperature radiance spectroscopy measurements of solid and liquid uranium and plutonium carbides
| Autor: | Dario Manara, Mohammed Malki, F. De Bruycker, Olivier Tougait, Rachel Eloirdi, K. Boboridis |
|---|---|
| Přispěvatelé: | JRC Institute for Transuranium Elements [Karlsruhe] (ITU ), European Commission - Joint Research Centre [Karlsruhe] (JRC), Institut des Sciences Chimiques de Rennes (ISCR), Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA), the Seventh Framework Programme of the European Commission through the F-BRIDGE project (Grant agreement No. 211690), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2012 |
| Předmět: |
Nuclear and High Energy Physics
Materials science 020502 materials Radiochemistry Analytical chemistry chemistry.chemical_element [CHIM.MATE]Chemical Sciences/Material chemistry 02 engineering and technology Uranium 021001 nanoscience & nanotechnology 7. Clean energy Carbide Plutonium chemistry.chemical_compound 0205 materials engineering Nuclear Energy and Engineering chemistry 13. Climate action Melting point Emissivity Radiance General Materials Science Uranium carbide 0210 nano-technology Thermal analysis |
| Zdroj: | Journal of Nuclear Materials Journal of Nuclear Materials, Elsevier, 2012, 426 (1-3), pp.126-138. ⟨10.1016/j.jnucmat.2012.03.041⟩ Journal of Nuclear Materials, 2012, 426 (1-3), pp.126-138. ⟨10.1016/j.jnucmat.2012.03.041⟩ |
| ISSN: | 0022-3115 |
| DOI: | 10.1016/j.jnucmat.2012.03.041 |
| Popis: | International audience; In this work, an experimental study of the radiance of liquid and solid uranium and plutonium carbides at wavelengths 550 nm ⩽ Î" ⩽ 920 nm is reported. A fast multi-channel spectro-pyrometer has been employed for the radiance measurements of samples heated up to and beyond their melting point by laser irradiation. The melting temperature of uranium monocarbide, soundly established at 2780 K, has been taken as a radiance reference. Based on it, a wavelength-dependence has been obtained for the high-temperature spectral emissivity of some uranium carbides (1 ⩽ C/U ⩽ 2). Similarly, the peritectic temperature of plutonium monocarbide (1900 K) has been used as a reference for plutonium monocarbide and sesquicarbide. The present spectral emissivities of solid uranium and plutonium carbides are close to 0.5 at 650 nm, in agreement with previous literature values. However, their high temperature behaviour, values in the liquid, and carbon-content and wavelength dependencies in the visible-near infrared range have been determined here for the first time. Liquid uranium carbide seems to interact with electromagnetic radiation in a more metallic way than does the solid, whereas a similar effect has not been observed for plutonium carbides. The current emissivity values have also been used to convert the measured radiance spectra into real temperature, and thus perform a thermal analysis of the laser heated samples. Some high-temperature phase boundaries in the systems Uâ€"C and Puâ€"C are shortly discussed on the basis of the current results. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect