Potassium iodide chemiluminescence in diffusion flames and the KI upper-state potential

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Abstract
Chemiluminescence spectra of potassium iodide have been measured in a dilute diffusion flame apparatus. A total of 54 fluctuation bands have been resolved. An analysis of these results as well as previous potassium iodide spectra is presented. By using molecular beam scattering data an extremely accurate excited state potential for potassium iodide is obtained.