Abstract:
Ozone is measured in situ using a photometer consisting of a mercury lamp, two sample chambers that can be peridically scrubbed of ozone, and two detectors that measure the 254-nm radiation transmitted through the chamber from the lamp. The ozone number density is calculated using the ozone absorption cross-section at 254-nm and the Beer-Lambert Law. The one second data collection rate the minimum detectable concentration of ozone (one sigma) is 1.5 x 1010 molecules/cm3.
