Laser Diagnostics of Zirconium Carbide Vaporization

Autor:	Andrew D. Sappey, Paul J. Wantuck, Darryl P. Butt
Rok vydání:	1994
Předmět:	Zirconium Materials science Analytical chemistry chemistry.chemical_element Laser Carbide law.invention Zirconium carbide chemistry.chemical_compound chemistry law Vaporization Atom Materials Chemistry Ceramics and Composites Emission spectrum Energy source
Zdroj:	Journal of the American Ceramic Society. 77:1411-1417
ISSN:	1551-2916 0002-7820
DOI:	10.1111/j.1151-2916.1994.tb09737.x
Popis:	Understanding the vaporization behavior of nuclear fuel materials in high-temperature environments is critical for several proposed nuclear thermal propulsion (NTP) concepts. In particular, the uranium-zirconium-carbon (U-Zr-C) system is of importance because of the potential application of (U[sub y]Zr[sub 1[minus]y])C[sub x] solid solutions or (U[sub y]Zr[sub 1[minus]y])C[sub x] + C composite materials in nuclear rockets for the proposed manned mission to Mars. Here, laser diagnostic methods are developed to study the behavior of laser-ablated zirconium carbide (ZrC). The optical emission spectra from the Zr-C plasma plume is measured from 200 to 500 nm. Emission from zirconium atoms dominated the observed spectra. From the spectra, the average plasma temperature was estimated to be 10,500 [+-] 1,500 K. Plume formation is characterized using a CCD camera to capture emission at delay times (with respect to the ablation laser pulse) ranging from 1 [mu]s to 1 ms and using planar laser-induced fluorescence to map Zr atom distributions.
Databáze:	OpenAIRE
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