Systematic Observations of 150 W Metal-Halide Arc Lamps Containing a Progression of Additive Chemistries

Published

July 1, 2004

Author(s)

John J. Curry, Craig J. Sansonetti

Abstract

With three complimentary diagnostic methods, we examined a series of 150 W metal-halide arc lamps containing a progression of additive chemistries: 1) pure Hg, 2) Hg + HgI2, 3) Hg + NaI, and 4) Hg + NaI + DyI3. We obtained spatial distributions of Hg using x-ray absorption imaging, spatial distributions of Dy and I using x-ray induced fluorescence, and core temperatures using optical emission spectroscopy. An identical series of lamps was examined by researchers at the University of Wisconsin using optical absorption and infrared emission spectroscopy. This work is part of the ALITE-II project, sponsored by the Electric Power Research Institute, whose goal is to identify and reduce infrared losses in metal-halide arc lamps.

Proceedings Title

Light Sources 2004

Conference Dates

July 18-22, 2004

Conference Location

Toulouse, FR

Conference Title

International Symposium on the Science and Technology of Light Sources

Pub Type

Conferences

Keywords

arc lamp, Fourier transform spectroscopy, metal-halide, spectroscopy, x-ray fluorescence

Citation

Curry, J. and Sansonetti, C. (2004), Systematic Observations of 150 W Metal-Halide Arc Lamps Containing a Progression of Additive Chemistries, Light Sources 2004, Toulouse, FR (Accessed April 25, 2026)

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