Optical spectroscopic based in-line iodine flow measurement system - an application to COIL

Precision measurement of iodine concentration is an essential diagnostic tool in the development and optimization of chemical oxygen-iodine laser (COIL) system. A simple technique based on absorption spectroscopy has been developed and the absorption cell assembly was interfaced with the data acquisition and control system (DACS) for monitoring the iodine flow rate in real time. The assembly is being used in our 500 W COIL system and more than 600 power runs have been given.