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Observation of vapor density enhancement of a rare-earth metal-halide in the temperature range relevant to metal-halide lamps

Published

Author(s)

John J. Curry, E. G. Estupinan, W. P. Lapatovich, Albert Henins, S. D. Shastri

Abstract

The total vapor-phase densities of Dy in equilibrium with a DyI$_3$/InI condensate and Tm in equilibrium with a TmI$_3$/TlI condensate have been measured for temperatures between 900 K and 1400 K. The measurements show strong enhancements in rare-earth vapor densities compared to vapors in equilibrium with the pure rare-earth metal-halides DyI$_3$ and TmI$_3$,respectively. The enhancement is attributed to formation of the vapor phase complexes InDyI$_4$ and TlTm$_4$. The measurements were made with x-ray induced fluorescence on the Sector 1-ID beam line at the Advanced Photon Source. The temperature range and salt mixtures are relevant to the operation of metal-halide high-intensity discharge lamps.
Citation
Applied Physics Letters
Volume
100

Keywords

complexing, fluorescence, high-temperature, metal-halide, pressure, rare-earth, salt, vapor, x ray

Citation

Curry, J. , Estupinan, E. , Lapatovich, W. , Henins, A. and Shastri, S. (2012), Observation of vapor density enhancement of a rare-earth metal-halide in the temperature range relevant to metal-halide lamps, Applied Physics Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=908779 (Accessed June 25, 2024)

Issues

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Created February 22, 2012, Updated February 19, 2017