Temporal and spatial characteristics of XeF2 photodissociation wave

The framing photographs of XeF2 photodissociation wave (PDW) under different experimental conditions have been taken, showing the forming process of the PDW. The variations of the radius, thickness and developing velocity of the PDW with time were obtained under different primary XeF2 concentrations. The temporal and spatial characteristics of the PDW were analyzed. Results show the maximum travelling distance of PDW is about 3 cm, and the maximum developing velocity of the PDW is about 28 km/s. As the primary XeF2 concentration is lower, the radius will be larger, the developing velocity higher and the PDW thicher.