Long path laser ozone monitor evaluation

A long path laser air pollution monitor was evaluated. The monitor was known as ILAMS (Infrared Laser Atmospheric Monitoring System) and designed explicitly for measuring the ambient ozone concentration. The evaluation program was conducted in both the laboratory and under field conditions. In addition to the evaluation, several system modifications were carried out such as, the addition of a beam steering system, the addition of a He-Ne laser alignment system, and various improvements in laser alignment techniques. The field study portion of the evaluation was carried out as a part of the North-East Oxidant Study (NEROS). The experiments conducted, the modifications made, and the problems identified are completely described.