CHED 1392 |
| High resolution dispersed fluorescence (DF) spectra of the excited vibrational levels in formaldehyde (H2CO) have been recorded to describe its S0 potential energy surface. Formaldehyde was cooled in a free-jet expansion and excited with a laser to the 40, 41, 3141 and 51 levels in S1. The resulting fluorescence was dispersed with a monochrometer to yield S0 vibrational spectra. 235 vibrational levels have been assigned and fit to a polyad model. The model includes harmonic and anharmonic terms, and it also accounts for resonances among vibrational levels. DF spectra of the 40, 41 and 4161 levels in formaldehyde-d (HDCO) were also recorded, and the assignment of these spectra is in progress. |
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Undergraduate Research Poster Session: Physical Chemistry
2:00 PM-4:00 PM, Monday, March 26, 2007 Hyatt Regency Chicago -- Riverside Center, Poster
Division of Chemical Education |