LIF measurement for arcjet of oxygen and argon mixture gases

This paper presents applications of LIF in the flow of high temperature and high enthalpy gases: we have adopted ArF excimer to excite the rot-vib absorption lines near 193.3 nm for Schumann-Runge system of Oxygen and used UV PMT to detect the fluorescence near 256nm to establish a set of LIF flow field measuring system based on ArF excimer. On the basis of LIF system we have done some research on LIF technology. We have obtained the experimental results of fluorescence signal within Oxygen Schumann-Runge system for the air at room temperature and arc-jet of oxygen and argon mixture gases. The experimental result show that the LIF measurement system based on ArF excimer has been established successfully.