Abstract

The generation of infrared radiation by stimulated electronic Raman scattering (SRS) in a cesium vapor heat pipe is used to obtain diagnostic information on HBr in a tungsten halogen lamp. The IR beam traverses through the center of the coiled filament of a General Electric projection lamp, and spectra are taken of the <i>R</i> branch in the fundamental band for the lamp lit from 0 to 148 W, corresponding to filament temperatures of 296-2387 K. Molecular rotational temperatures and absolute HBr densities are then derived from the spectra. The results demonstrate the method to be a useful diagnostic tool for spatially resolved measurements of a key partner in the tungsten halogen cycle.

Modulation of subminiature tungsten-halogen lamps

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Spectral irradiance model for tungsten halogen lamps in 340–850 nm wavelength range

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