Absorption spectroscopy with an UHP-backlight system – an innovative and simple concept for particle density diagnostics in HID-lamps
Michael Westermeier, J. Reinelt, Cornelia Ruhrmann, Jürgen Mentel, Peter Awakowicz
Frontiers in Low Temperature Plasma Diagnostics 8
Aim of the presented work is the optimization of electrodes in high intensity discharge (HID) lamps by investigating the gas-phase emitter-effect. An innovative, simple and cheap absorption diagnostic setup will be presented consisting mainly of a strong UHP-backlight source. The new concept can replace the complex conventional laser absorption systems in special applications like HID diagnostic. Results are given exemplarily for particle density measurements in HID lamps.