Knowledge Bank

We have recorded a series of high-resolution absorption spectra of ozone at room temperature using the McMath Fourier transform spectrometer at the National Solar Observatory on Kitt Peak. The spectra cover a wavenumber range from approximately $1900cm-1$ to $5400cm-1$ at a resolution of $0.01cm-1$. Improvements in the design of our ozone generating system have allowed us to obtain several spectra of nearly pure ozone at high abundances (up to 3800 torr-cm), and lines belonging to at least 16 transitions from the ground state can be observed in these scans. Analysis is in progress to determine line positions, assignments, and intensities. In the region from $2600cm-1$ to $3600cm-1$, we have used the same experimental apparatus to record a number of absorption spectra of ozone broadened by dry air, by N2, and by $O2$, also at room temperature. These spectra are being analyzed to determine pressure broadening and line shift coefficients.