Measurement and analysis of airborne molecular contaminants in high power laser facility

Airborne molecular contaminations inside a high power laser facility are studied. Air samples of suspected locations are collected by special air-sampling facilities before and after laser launch. Extraction and concentration measurement of the main airborne molecules, including halogens, sulphur compounds, ammonia and soluble amines and hydrocarbons (C6～C16) are made during the sampling progress. The trace analysis suggests that the concentrations of most species except sulphur compounds, especially ammonia, soluble amines and hydrocarbons，exceed the suggested upper control limit of US NIF reference. The concentrations of halogens, sulphur compounds, ammonia and soluble amines after laser launch are lower than that before launch while the concentrations of hydrocar