Time-resolved spectroscopy on the excited electronic states of NO2 in the neighborhood of 454.6 nm
- 15 January 1979
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 70 (2) , 881-885
- https://doi.org/10.1063/1.437520
Abstract
The time‐resolved excitation spectrum and the time‐resolved fluorescence spectrum were measured by using a pulsed, tunable dye laser (Δt=4 ns, Δλ=3.5 pm) and a pulse‐gated photon counter (Δt=4 ns). The three kinds (one 2B1 and two 2B2) of the excited electronic states of NO2 were resolved in the 454.3–454.8 nm region. Sharp Q and R rotational lines of the transition to the (0, 8, 0) vibrational level of the 2B1 excited electronic state appeared in the time‐resolved excitation spectrum monitored through the ν2 band fluorescence. Meanwhile sharp lines and a continuum band were observed in both excitation spectra monitored through the ν1 and ν2 band fluorescence. These sharp lines could be assigned to the transition to the (1, 10, 0) vibrational level of the 2B2 state. The continuum band seems to be dominantly composed of many rotational lines to the perturbed 2B2 states.Keywords
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