Abstract
A primary study of the continuum emission from the arc of a high-intensity discharge (HID) lamp with an argon–mercury chemistry at pressures higher than 1 × 10 5 Pa is reported. Spectrally and spatially resolved calibrated continuum spectra from a vertically mounted test lamp (an MHN150 vessel filled at room temperature with 12 mg mercury and 400 mbar argon) are reported for the visible and infrared wavelength range 0.3– 5.5 μ m . These spectra were analyzed to quantify the infrared (IR) losses and to determine the temperature profile inside the lamp.
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