3D dysprosium density in the metal-halide lamp measured by emission and laser absorption spectroscopy in a centrifuge at 1-10g

A.J. Flikweert, T. Nimalasuriya, G.M. Thubé, G.M.W. Kroesen, W.W. Stoffels

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Abstract

The metal-halide lamp is a High Intensity Discharge (HID) lamp with a high efficiency. The salt additive (DyI3) acts as prime radiator. The present lamp suffers from non-uniform light output, caused by diffusion and convection processes. To gain a better understanding of the lamp, the convection is varied by vaying the gravity. The latest addition is a centrifuge (diameter 3 metres), whisch can go up to 10g. Lateral Dy profiles and radial temperature profiles are obtained by means of emission spectoscopy. In addition, laser absorption spectroscopy is used to obtain a 2D Dy density image. The first results will be presented.
Original languageEnglish
Title of host publicationLight Sources 2007: Proceedings of the 11th International Symposium on the Science and Technology of Light Sources, 20-24 May, 2007, Shanghai, China
Place of PublicationShanghai, China
PublisherIntitute of Physics Publishers
PagesCP121-391/392
Publication statusPublished - 2007
Event11th International Symposium on the Science and Technology of Light Sources - Shanghai, China
Duration: 20 May 200724 May 2007

Conference

Conference11th International Symposium on the Science and Technology of Light Sources
CountryChina
CityShanghai
Period20/05/0724/05/07

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    Flikweert, A. J., Nimalasuriya, T., Thubé, G. M., Kroesen, G. M. W., & Stoffels, W. W. (2007). 3D dysprosium density in the metal-halide lamp measured by emission and laser absorption spectroscopy in a centrifuge at 1-10g. In Light Sources 2007: Proceedings of the 11th International Symposium on the Science and Technology of Light Sources, 20-24 May, 2007, Shanghai, China (pp. CP121-391/392). Intitute of Physics Publishers.